ANATOMY OF FLOWERING PLANT IMPORTANT QUESTIONS

Identify the given figure and select the correct option for A,B and C.

	A	B	C
(a)	Leaf primordium	Shoot apical meristem	Axillary bud
(b)	Leaf primordium	Shoot apical meristem	Apical bud
(c)	Root hair	Root apical meristem	Axillary bud
(d)	Root hair	Root apical meristem	Apical bud

ANSWER (a)

Match the following and choose the correct option from below.

Meristem (i) Photosynthesis, storage

Parenchyma (ii) Mechanical support

Collenchyma (iii) Actively dividing cells

Sclerenchyma (iv) Stomata

Epidermal tissue (v) Sclereids

Options.

(a) A – (i), B- (iii), C-(v), D-(ii), E-(iv)

(b) A-(iii), B-(i), C-(ii), D-(v), E- (iv)

(d) A-(v), B-(iv), C-(iii), D-(ii), E-(i)

ANSWER(b) A-(iii), B-(i), C-(ii), D-(v), E- (iv)

Select the mismatched pair out of the following.

Column – I

Column – II

(a) Radial vascular

bundle

Xylem and phloem on

different radii

(b) Bicollateral vascular

bundle

Phloem present on both

sides of xylem

bundle

Xylem and phlom on

same radii

(d) Amphivasal vascular

Phloem surrounds xylem

ANSWER(d)

Interfascicular cambium develops from the cells of.

(a) Medullary rays

(b) Pericycle

(d) Endodermis

ANSWER(a) Medullary rays

In (i) Protoxylem lies towards periphery and metaxylem lies towards centre. Such an arrangement of primary xylem is called as (ii)

(i) (ii)

(a) Stems Endarch

(b) Stems Exarch

(d) Roots Endarch

ANSWER(c) Roots Exarch

Identify the simple tissue from among the following.

(a) Xylem (b) Parenchyama

ANSWER(c) Epidermis

Identify the given figure and select the correct labels for A,B and C.

	A	B	C
(a)	Tylosis	Xylem parenchyma	Xylem vessel
(b)	Callose	Xylem parenchyma	Xylem vessel
(c)	Callose	Phloem parenchyma	Phloem vessel
(d)	Tylosis	Phloem parenchyma	Phloem vessel

ANSWER(a)

Which meristem helps in increasing girth.

Meristematic tissue responsible for increase in girth of tree trunk is.

(a) Intercalary meristem (b) Primary meristem

ANSWER(c) Lateral meristem

Match Column –I with Column – II and select the correct option from the codes given below.

Column –I	Column – II
A.Vessels	(i) Cells are living, with thin cellulosic cell walls
B. Tracheids	(ii) Cells possess highly thickened walls with obliterated central lumen
C. Xylem fibres	(iii) Individual members are interconnected through perforations in their common walls
D. Xylem parenchyma	(iv) Elongated tube – like cells with thick, lignified walls and tapering ends

(a) A –(iv), B– (iii), C– (ii), D– (i)

(b) A – (iii), B– (iv), C– (ii), D – (i)

(d) A – (iv), B – (ii), C –(iii), D –(i)

ANSWER(b) A – (iii), B– (iv), C– (ii), D – (i)

Epiblema of roots is equivalent to.

(a) Epidermis (b) Pericycle

ANSWER(a) Epidermis

Stomate which remain surrounded by a pair of subsidiary cells whose common wall is at right angles to guard cells are called

(a) Anomocytic (b) Diacytic.

ANSWER (b) Diacytic.

Vascular cambium in dicot root develops from.

Or

In dicot root initiation of lateral root and vascular cambium during secondary growth takes place from.

(a) Endodermis (b) Pericycle

ANSWER (d) Both (b) and (c)

Hypodermis is ____ in sunflower stem and ___ in maize stem.

(a) Parenchymatous, Collenchymatous

(b) Sclerenchymatous, Collenchymatous

(d) Sclerenchymatous, Sclerenchymatous

ANSWER(c) Collenchymatous, Sclerenchymatous

A conjoint and open vascular bundle will be observed in the transverse section of.

(a) Dicot stem. (b) Monocot root

ANSWER(a) Dicot stem.

Which of the following options correctly shows the sequence of different tissues of the periderm starting from periphery ?

(a) Phellogen – Phellem – Phellodem

(b) Phellem – Phelloderm – Phellogen

(d) Phellem – Phellogen – Phelloderm

ANSWER(d) Phellem – Phellogen – Phelloderm

Read the different components from (A) to (D) in the list given below and tell the correct order of the components with reference to their arrangement from outer side to inner side in a woody dicot stem.

(A) Secondary cortex (B) Wood

(a) (A), (B), (D), (C) (b) (D), (A), (C), (B)

ANSWER (b) (D), (A), (C), (B)

Read the following statements and select the correct ones.

(i) Phloem parenchyma is absent in most monocots.

(ii) Gymnosperms lack tracheids and vessels.

(iii) Gymnosperms lack companinon cells.

(a) (i) and (ii) (b) (ii) and (iii)

ANSWER(c) (i) and (iii)

Interfascicular cambium and cork cambium are formed due to.

(a) Cell – division (b) Cell dedifferentiation

ANSWER (b) Cell dedifferentiation

Which of the following conditions of xylem is present in both monocot and dicot stems ?

(a) Polyarch (b) Mesarch

ANSWER(c) Endarch

Phellogen and phellem respectively denote.

(a) Cork and cork cambium

(b) Secondary cortex and cork

(d) Cork cambium and cork

ANSWER(d) Cork cambium and cork

Read the following statements and select the correct option.

Statement 1: Annual rings are distinct in plants growing in temperate regions.

Statement 2: In temperate regions, the climatic conditions are not uniform through the year.

(a) Both statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1.

(b) Statement 1 is correct and statement 2 is incorrect.

(d) Both statements 1 and 2 are incorrect.

ANSWER(c) Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1.

How many shoot apical meritsems are likely to be present in a twig of a plant possessing, 4 branches and 26 leaves?

(a) 5 (b) 26 (c) 1 (d) 30 (e) 4

ANSWER(a) 5

Select the incorrect pair out of the following.

Type of tissue Function

(a) Parenchyma – Storage, photosynthesis

(b) Phloem – Conduction of water and minerals

(d) Xylem – Ascent of sap

ANSWER(b) Phloem – Conduction of water and minerals

A piece of wood having no vessels (trachea) must be belonging to.

(a) Teak (b) Mango (c) Palm (d) Pine

ANSWER(d) Pine

Read the following statements with 1 -2 blanks in each one of them.

(i) In monocot root, a large number of vascular bundles are arranged in the form of a around the central

(ii) Due to the presence of ______ the endodermal cells do not allow wall to wall movement of substances between cortex and pericycle, in a primary dicot root.

(iii) The epidermis of stem of sunflower bears several unbranched _____ hair.

(iv) the central portion of a dicot stem is usually occupied by ____ comprising of thin walled

parenchymatous cells.

Fill in the blanks in the above statements and select the correct option for any two of them.

(a) (i) Ring,pith; (ii) Hypodermis

(b) (ii) Casparian strips; (iii) Unicellular

(d) (iii) Multicellular; (iv) Pith

ANSWER(d) (iii) Multicellular; (iv) Pith

A Plant tissue, when stained, showed the presence of hemicelluloses and pectin in cell wall of its cells. The tissue represents.

(a) Sclerenchyman (b) Xylem

ANSWER(c) Collenchyma

Which out of the following is a mismatched pair ?

(a)Amphistomatic – Stomata non – functional or absent

(b) Hypostomatic – Stomata present more on lower epicermis than on upper epidermis

(d) Sunken stomata – Stomata deep seated below the surface

ANSWER(a)Amphistomatic – Stomata non – functional or absent

In conifers fibres are likely to be absent in.

(a) Secondary phloem (b) Primary phloem

ANSWER(d) Secondary Xylem

Following table summarizes the differences between a monocot root and a dicot root Pick up the wrong differences and select the correct option.

	Characters	Monocot root	Dicot root
(i)	Vascular bundle	Polyarch i.e. more than 6 vascular bundles	Diarch to hexarch i.e., 2 – 6 Vascular bundles
(ii)	Cambium	Absent	Present,so secondary growth occurs
(iii)	Pith	Poorly developed	Well developed large pith
(iv)	Activity of pericycle	Gives rise to secondary roots and cork cambium	Gives rise to lateral roots only

(a) (i) and (iii) (b) (i) and (iv)

ANSWER(c) (iii) and (iv)

What is the fate of primary xylem in a dicot root showing extensive secondary growth?

(a) It gets crushed

(b) May or may not get crushed

(d) It is retained in the centre of the axis

ANSWER(d) It is retained in the centre of the axis

Which one is correct?

(a) Anatomy – Internal morphology, study of internal structure

(b) Tissue – A group of cells having a common origin and usually performing a common function

(d) A and b

ANSWER(d) A and b

Which one produces primary tissues?

(a) Apical meristem (b) Root apical meristem

ANSWER(a) Apical meristem

Meristems are present in

(a) Root apex and shoot apex (b) Bases of leaves

ANSWER (d) All

During formation of leaves and elongation of stem, some cells ‘left behind’ from the shoot apical meristem, constitute _______.

(a) Lateral meristem (b) Axillary bud

ANSWER (b) Axillary bud

A branch or a flowers is developed in the axil of leaves by –

(a) Apical bud (b) Axillary bud

ANSWER (b) Axillary bud

Which one is correct about intercalary meristem?

(a) It occurs between mature tissues

(b) It occurs in grasses and regenerate parts removed by grazing herbivores

(d) All

ANSWER(d) All

All are lateral meristem except –

(a) Fascicular / vascular cambium

(b) Interfascicular cambium

(d) Phellogen

ANSWER (c) Apical and intercalary meristem

Secondary tissue are produced by all except-

(a) Fascicular cambium (b) Interfascicular cambium

ANSWER(c) Apical meristem

Permanent tissue consists of cells having no power of cell division. Such tissues are formed by

(a) Primary meristem (b) Cork cambium

ANSWER(d) All

Primary tissues of a plant

(a) Add to the length of roots and shoots

(b) Add to the diameter of existing roots and shoots

(d) Are found only in the seedling

ANSWER(a) Add to the length of roots and shoots

Secondary tissues of a plant

(a) Add to the length of roots and shoots

(b) Add to the diameter of existing roots and shoots

(d) Are found only in the seedling

ANSWER(b) Add to the diameter of existing roots and shoots

Cells of permanent tissues are specialized

(a) Functionally

(b) Only structurally

(d) For mitosis

ANSWER(c) Both structurally and functionality

During the formation of the primary body, specific regions of the apical meristem produce-

(a) Dermal tissues (b) Ground tissues

ANSWER (d) All

Apical meristems and intercalary meristem are primary

meristem because they

(a) Are disintegrated after primary growth of plant

(b) Are disintegrated after secondary growth of plant

(d) None

ANSWER(c) Appear early in life of a plant and contribute to the formation of the primary plant body

Meristem helps in –

(a) Absorption of water (b) Growth of plants

ANSWER (b) Growth of plants

Grass stem elongates after initial growth due to

(a) Lateral meristem (b) Secondary meristem

ANSWER(c) Intercalary meristem

Meristematic activity occurs at

(a) Vascular tissue (b) Stem apex

ANSWER (b) Stem apex

Root apex is subterminal because it is

(a) Covered with root hair (b) Covered with root cap

ANSWER(b) Covered with root cap

Axillary and terminal buds develop by activity of –

(a) Lateral meristem (b) Intercalary meristem

ANSWER(c) Apical meristem

Which one is secondary lateral meristem?

(a) Intercalary (b) Cork cambium

ANSWER (d) Both b and c

Which one is correct?

(a) Permanent tissues having all cells similar in structure and function are simple tissues

(b) Permanent tissues having different types of cell are complex tissue

(d) All

ANSWER(d) All

Forms major component within organs

C wall – thin, cellulosic

Shape of cells – generally isodiametric

Intercellular space – Present / absent

Photosynthetic, storage or secretory in functionell

The above characters are attributed to –

(a) Collenchyma (b) Parenchyma

ANSWER (b) Parenchyma

Occur as layers or patches

Cell wall – Unevenly thickened due to pectocellulosic

deposition

Cells – Spherical, oval or polygonal

Often has chloroplast

Living mechanical tissue

Occur in hypodermis of young dicot stem and petiole

The characters are shown by which of the following tissues

(a) Parenchyma (b) Collenchyma

ANSWER (b) Collenchyma

Root hairs are present in

(a) Zone of cell division (b) Zone of cell elongation

ANSWER(c) Zone of maturation

Dead cells with narrow lumen, lignified cell wall with a few or numerous pits and serving a mechanical function only are called

(a) Collenchyma (b) Xylem

ANSWER(d) Sclerenchyma

Fibres and sclereids are the types of

(a) Parenchyma (b) Collenchyma

ANSWER(c) Sclerenchyma

The dead, elongated cells having lignified thick cell wall occurring in groups, with tapering ends and serving a mechanical function are called –

(a) Fibres (b) Vessels (c) Tracheids (d) Collenchyma

ANSWER(a) Fibres

Which of the following statement is incorrect about sclereids (stone cells)

(a) Variously shaped

(b) Highly thickened + lignified cell wall and lumen is narrow

(d) They are types of parenchyma

ANSWER(d) They are types of parenchyma

Xylem

(a) Functions as conducing tissue for water and minerals from root to the stem and leaves

(b) Provides mechanical strength to plant parts

(d) Is absent in pteridophytes

ANSWER(c) Both

Xylem in angiosperms consists of how many types of elements?

(a) 4 (b) 3 (c) 2 (d) 1

ANSWER(a) 4

Angiospermic xylem consists of –

(a) Vessels + Tracheids only

(b) Tracheids + Fibres only

(d) Parenchyma and fibres only

ANSWER(c) Vessel, tracheids, fibres and parenchyma

In pteridophytes and gymnosperms, xylem consists of all except

(a) Vessel (b) Tracheid (c) Fibre (d) Parenchyma

ANSWER(a) Vessel

Tracheid, vessel and sclereids are D similar in that they all

(a) Lack secondary walls (b) Conduct water and minerals

ANSWER(c) Function when dead

In each vascular bundle, the tissue nearest to the centre of the stem is

(a) Phloem (b) Fibres (c) Vascular cambium (d) Xylem

ANSWER(d) Xylem

Conducting cells called _____ elements are the part of xylem where water and minerals are transported

(a) Tracheary (b) Vascular (c) Vessel (d) Phloem

ANSWER(a) Tracheary

Unlike tracheids, vessel elements

(a) Function when dead

(b) Are spindle shaped

(d) Lose part or all of the end walls

ANSWER(d) Lose part or all of the end walls

The ______ is the centermost tissue in a dicot stem.

(a) Pith (b) Xylem (c) Phloem (d) Pericycle

ANSWER (b) Xylem

Tracheids and vessel elements

(a) Die before they become functional

(b) Are important constituents of all plants

(d) Are without lignified cell wall

ANSWER(a) Die before they become functional

How many tissues are present within dicot root having cortex, endodermis, pericycle, pith, xylem and phloem

(a) 5 (b) 6 (c) 3 (d) 12

ANSWER(c) 3

Multicellular with wide lumen

They consists of vertical rows of cells with cross wall dissolved

Discontinuous lumen due to presence of end walls

They are dead

Cell walls are lignified

Long, cylindrical tube-like structure

Elongated cells with tapering ends

Match the above characters with

Vessel B. Tracheid

(a) A – I, II, IV, V, VI; B – III, IV, V, VII

(b) A – III, IV, V, VII; B – I, II, IV, V, VI

(d) A – I, II, III, IV; B – II, V, VI, VII

ANSWER(a) A – I, II, IV, V, VI; B – III, IV, V, VII

Which of the following is the living element of xylem?

(a) Fibre (b) Parenchyma (c) Tracheid (d) Vessel

ANSWER(b) Parenchyma

Xylem parenchyma stores

(a) Starch (b) Fat (c) Tannins (d) All

ANSWER (d) All

Ray parenchymatous cells

(a) Are living (b) Are dead

ANSWER(d) a and c

In angiosperm phloem –

(a) Both the sieve tube elements and companion cells have nuclei

(b) Sieve tube elements have nuclei but companion cells do not

(d) Neither the companion cells nor sieve tube elements have nuclei

ANSWER (c) The companion cells have nuclei but the sieve tube elements do not

Sieve tube members have sieve plates where they join with other sieve tube members. Which of the following best describes the sieve plates?

(a) Sieve plates are necessary to allow conduction between sieve tube cells

(b) Sieve plates allow joining of cytoplasm between adjacent tube cells

(d) All

ANSWER(d) All

The living and non-lignified component of vascular bundle is / are

(a) Vessel and tracheids

(b) Vessel and phloem

(d) Wood parenchyma and sieve tube

ANSWER(d) Wood parenchyma and sieve tube

Match the Column I with Column II –

Column I		Column II
I.	Sieve tube	A.	Gymnospermic phloem
II.	Companion cell	B.	Angiospermic phloem
III.	Albuminous cells
IV.	Sieve cell
V.	Parenchyma
VI.	Fibre

(a) A = I, II, V, VI; B = III, IV, V, VI

(b) A – I, III, IV, V, VI; B = II, III, IV, V, VI

(d) A = I, V, VI; B = II, III, IV

ANSWER(c) A = III, IV, V, VI; B = I, II, V, VI

Sieve tube or sieve cell is living but enucleate.

Xylem and phloem constitute the vascular bundle.

First formed xylem element and phloem element are called metaxylem and metaphloem respectively.

Phloem fibres are generally absent in primary phloem.

Phloem parenchyma is absent in most of the monocots.

Which of the above statements is wrong?

(a) I, II, V (b) III (c) IV, V (d) III, IV

ANSWER(b) III

Which of the following statements is incorrect about companion cell?

(a) It is a specialized parenchymatous cell

(b) Its nucleus controls the function of sieve tube

(d) It is present in all vascular plants having phloem

ANSWER(d) It is present in all vascular plants having phloem

Heterogeneous tissues are

(a) Vascular and cork cambia

(b) Xylem and phloem elements

(d) Parenchyma and sclerenchyma

ANSWER(b) Xylem and phloem elements

At maturity, sieve tubes do not posses

(a) Cell wall (b) Nucleus (c) Cytoplasm (d) Vacuoles

ANSWER (b) Nucleus

Sieve tube is

(a) Multicellular, vessel like structure

(b) Provided with porous septa

(d) All of the above

ANSWER(d) All of the above

Complex tissue comprises

(a) Xylem and phloem (b) Heterogeneous tissue

ANSWER (d) All of these

Albuminous cells of gymnosperms are equivalent to –

(a) Sieve tubes (b) Sieve cells

ANSWER(c) Companion cells

Companion cells are associated with –

(a) Sieve cells (b) Sieve tubes

ANSWER (b) Sieve tubes

Sieve tubes are best suited for translocation of solutes because

(a) They are much broader than long

(b) They possess no end wall

(d) They possess interconnected lumen

ANSWER(d) They possess interconnected lumen

Grittiness of fruit in pears is due to –

(a) Presence of Silica (b) Presence of stone cells / sclereids

ANSWER (b) Presence of stone cells / sclereids

Which of the following statement about the phloem parenchyma is false?

(a) It is an elongated, spindle-shaped, nucleate cell having dense cytoplasm

(b) Its cell wall is composed of non-cellulosic material

(d) Besides food, it stores resins, tannins, latex etc

ANSWER(b) Its cell wall is composed of non-cellulosic material

Sclerenchymatous cells

Much elongated, unbranched and tapering ends

Needle like shape

Cell wall thick

Dead cells

Found in secondary phloem

Which of the following cells is defined by the above

characters?

(a) Sieve tube

(b) Phloem parenchyma

(d) Companion or albuminous cell

ANSWER(c) Phloem fibre / bast fibre

Which of the following bast fibres is of great commercial value?

(a) Jute (b) Flax (c) Hemp (d) All

ANSWER (d) All

A mature sieve tube –

(a) Possesses a peripheral cytoplasm and no nucleus

(b) Has a large vacuole

(d) All

ANSWER(d) All

On the basis of location and function, how many types of the tissue system are found in vascular plants

(a) 2 (b) 3 (c) 4 (d) 5

ANSWER (b) 3

Epidermis is derived from

(a) Ground meristem (b) Procambium

ANSWER(c) Protoderm

The primary function of epidermis is

(a) Protection (b) Photosynthesis

ANSWER(a) Protection

Epidermis consists of _____ and is ____ (layered)

(a) Sclerenchyma, multilayered

(b) Collenchymatous, single layered

(d) Parenchyma, single-layered

ANSWER(d) Parenchyma, single-layered

Excessive loss of water is prevented by

(a) Epidermis (b) Endodermis (c) Cortex (d) Xylem

ANSWER(a) Epidermis

Trichomes, hairs, stomata etc are included under

(a) Ground tissue system (b) Vascular tissue system

ANSWER(c) Epidermal tissue system

Stomata develop from –

(a) Dermal tissue (b) Ground tissue

ANSWER(a) Dermal tissue

Guard cells differ from epidermal cells in having

(a) Specific shape (b) Chloroplast

ANSWER

(d) All

Which of the following statements is false?

Epidermal cell has small amount of cytoplasm and a large vacuole

Waxy layer cuticle is absent in roots

Root hairs are unicellular, while stem hairs / trichomes are multicellular

Trichomes – branched / unbranched, soft /stiff and secretory or transpiration preventive

Guard cells are dumbbell-shaped in dicots, and bean-shaped in monocots (e.g. grass)

(a) I (b) IV (c) III (d) V

ANSWER (d) V

The stomatal apparatus includes

(a) Only stomatal aperture

(b) Stomatal aperture and guard cells

(d) Stomatal aperture, guard cells and surrounding subsidiary cells

ANSWER(d) Stomatal aperture, guard cells and surrounding subsidiary cells

Which one is wrong about the guard cell

(a) They are modified ground tissue

(b) They are chlorophyllous

(d) They regulate stomatal movement for transpiration and gaseous exchange

ANSWER(a) They are modified ground tissue

Sometimes a few epidermal cells in the vicinity of guard cells become specialized in their shape and size and are known as –

(a) Stomatal aperture (b) Trichomal cell

ANSWER(c) Subsidiary cells

How many shoot apical meristematic zones are expected in a twig of a plant possessing 9 branches, 39 leaves?

(a) 9 (b) 39 (c) 10 (d) 8

ANSWER (c) 10

Ground / fundamental tissue system is made up of

(a) Parenchyma (b) Collenchyma

ANSWER(d) All

Ground tissue includes

(a) Cortex + Pericycle (b) Pith

ANSWER(d) All

In leaves, ground tissue consists of

(a) Mesophyll (b) Epidermis

ANSWER(a) Mesophyll

Pit pairs allow plasmodesmata to travel through –

(a) The primary cell wall

(b) The secondary cell wall

(d) Neither primary nor secondary cell wall

ANSWER (a) The primary cell wall

One of the primary function of the ground tissue in a plant is –

(a) Photosynthesis (b) To protect the plant

ANSWER(a) Photosynthesis

In the development of a root, the protoderm gives rise to the

(a) Cortex (b) Root hair (c) Endodermis (d) Pith

ANSWER(a) Cortex

Plant cells that are photosynthetically active are found in the _______ layer of leaf and are ______ cells –

(a) Epidermis, Parenchymatous

(b) Mesophyll, Parenchymatous

(d) Aerenchyma, Collenchymatous

ANSWER(b) Mesophyll, Parenchymatous

Xylem and phloem are present on the same radius, such a vascular bundle is called

(a) Radial (b) Bicollateral (c) Concentric (d) Conjoint

ANSWER (d) Conjoint

When xylem and phloem are arranged in an alternate manner on separate radii, such a vascular bundle is called

(a) Radial (b) Bicollateral (c) Concentric (d) Conjoint

ANSWER(a) Radial

Vascular bundle having cambium between the xylem and phloem is called –

(a) Close vascular bundle (b) Open vascular bundle

ANSWER (b) Open vascular bundle

Vascular bundle without cambium is called –

(a) Close vascular bundle (b) Open vascular bundle

ANSWER(a) Close vascular bundle

Which one is not the part of stele?

(a) Pericycle (b) Pith (c) Vascular bundle (d) Co tex

ANSWER(d) Co tex

In dicot root, initiation of lateral root, and vascular cambium during secondary growth takes place from

(a) Cortex (b) Epidermis (c) Pericycle (d) Xylem

ANSWER (c) Pericycle

The innermost layer of last layer of cortex is called

(a) Pericycle (b) Conjunctive tissue

ANSWER(c) Endodermis

Unicellular hair

Endodermis with passage cells

Pith/small / inconspicuous

Radial vascular Bundle

Xylem-exarch

2 – 4 xylem and phloem

The above description refers to which of the following

(a) Monocot root (b) Dicot root

ANSWER (b) Dicot root

Monocot root differ from dicot root in having

(a) Polyarch xylem bundles

(b) Large and well developed pith

(d) Radial vascular Bundle and exarch xylem

ANSWER(c) Both

In root, the tangential as well as radial walls of the barrel-shaped endodeermal cells have a deposition of water impermeable, waxy material-suberin in the form of –

(a) Cuticle strips (b) Protein strips

ANSWER(c) Casparian strips

In dicot stem

(a) Vascular bundles are conjoint, open and arranged in a ring

(b) Xylem is endarch

(d) All

ANSWER(d) All

Well developed pith is seen in

(a) Monocot root and monocot stem

(b) Dicot root and dicot stem

(d) Dicot root and monocot stem

ANSWER(c) Monocot root and dicot stem

Which one is false about monocot stem?

Vascular bundles – scattered, conjoint, close, surrounded by sclerenchymatous bundle sheath and with water cavity

Hypodermis is sclerenchymatous

Peripheral vascular bundles – Smaller than centrally placed ones

Ground tissus parenchymatous ground tissues

(a) I, III, V (b) III, IV (c) IV (d) V

ANSWER(c) IV

Which one is correct about the dicot stem?

(a) Pericycle consists of semilunar sclerenchymatous patches above the phloem and few layers of parenchyma alternatively

(b) It does not show secondary growth

(d) a and c

ANSWER(d) a and c

Column I

Leaf is hypostomatic

Mesophyll is differentiated into palisade and spongy parenchyma

Leaf is amphistomatic

Vasis is cuticularised

VII. Vascular bundles of different sizes

VIII. Vascular bundle of similar size

Column II

Dicotyledonous / Dorsiventral leaf

Monocotyledonous / Monocot leaf

Which is correctly matched

(a) A = I, IV, V, VI, VII; B = II, III, IV, VI, VIII

(b) A = I, II, IV, VI, VII; B = III, IV, V, VI, VIII

(d) A = I, IV, V, VIII; B = II, III, IV, VI, VIII

ANSWER(b) A = I, II, IV, VI, VII; B = III, IV, V, VI, VIII

In leaves, protoxylem elements

(a) Face towards adaxial side

(b) Face towards abaxial surface

(d) Are scattered in the middle

ANSWER(a) Face towards adaxial side

In dorsiventral leaf, location of palisade tissue and phloem respective is –

(a) Adaxial and abaxial (b) Abaxial and adaxial

ANSWER(a) Adaxial and abaxial

In root, starch sheath is equivalent to –

(a) Pericycle (b) Endodermis

ANSWER (b) Endodermis

Which one is correct?

(a) In dorsiventral leaf, stomata on lower (abaxial) surface

(b) Protoxylem disintegrates to produce lacuna (lysigenous) in monocot stem

(d) All

ANSWER(d) All

T.S. of dicot stem is stained with iodine with proper

procedure. Which of the following structure is expected to show blue colour-

(a) Endodermis (b) Cortex (c) Pericycle (d) Phloem

ANSWER(a) Endodermis

In dicot stem lateral branch comes out form-

(a) Pericycle (b) Cortex (c) Pith (d) Epidermis

ANSWER (b) Cortex

Which one is correct about bulliform / motor cell?

(a) It is seen in grasses

(b) It is large-sized, thin-walled colourless, vacoulate cells on the adaxial surface

(d) All

ANSWER(d) All

In young dicot stem, cambium is –

(a) Single layered (b) 2 layered

ANSWER(a) Single layered

During secondary growth, a complete ring is formed by

(a) Only fascicular cambia

(b) Only interfascicular cambia

(d) Fascicular cambia + Phellogen

ANSWER (c) Fascicular (vascular) cambia and interfascicular cambia

Interfascicular cambia originate from cells of

(a) Medullary ray (b) Cortex

ANSWER(a) Medullary ray

Vascular cambium form xylem on the inside and phloem on the outside due to

(a) Differential action of hormones (b) Intrafascicular nature

ANSWER(a) Differential action of hormones

Secondary xylem is

(a) Exarch (b) Endarch (c) Mesarch (d) None

ANSWER (d) None

Secondary growth occurs due to activity of –

(a) Cork cambium (b) Interfascicular cambium

ANSWER(d) Both a and c

Amount of secondary xylem formed from cambium is –

(a) 8 times more than phloem

(b) 8 – 10 times more than phloem

(d) Equal to secondary phloem

ANSWER(c) 2 times more than phloem

Which one is correct about the secondary growth?

(a) Youngest secondary phloem is just outside the cambium while youngest secondary xylem inside the cambium

(b) Oldest secondary phloem is just inside the primary phloem while oldest secondary xylem is just above pith

(d) All

ANSWER(d) All

Which one is a false statement?

(a) The 1⁰ and 2⁰ phloem get gradually crushed due to the continued formation and accumulation of 2⁰ xylem

(b) 1⁰ xylem remains more or less intact in or near the centre

(d) None

ANSWER(c) Secondary growth is increase in length of the axis

A.	Spring wood or early wood	I.	Lighter in colour
B.	Autumn wood or late wood	II.	Density high
		III.	Density low
		IV.	Darker in colour
		V.	Larger number of xylary elements
		VI.	Vessels with wider cavity
		VII.	Lesser number of xylary elements
		VIII.	Vessels with small cavity

Which of the following matching is correct?

(a) A = II, IV, VII, VIII; B = I, III, V, VI

(b) A = I, II, VII, VIII; B = III, IV, V, VI

(d) A = I, III, VII, VIII; B = II, IV, V, VI

ANSWER (c) A = I, III, V, VI; B = II, IV, VII, VIII

Widening of tree trunk is mostly due to the activity of

(a) Phelloderm (b) Fascicular cambium

ANSWER(b) Fascicular cambium

Moving from the centre of tree trunk outward, the order of vascular tissues is

(a) 1⁰ xylem → 2°⁰xylem → vascular cambium → 2⁰ phloem → 1⁰ phloem

(b) 2⁰ xylem → 1⁰ xylem → vascular cambium → 1⁰ phloem → 2⁰phloem

(d) 1⁰ xylem → 1⁰ phloem → vascular cambium → 2⁰ phloem → 2⁰ xylem

ANSWER(a) 1⁰ xylem → 2°⁰xylem → vascular cambium → 2⁰ phloem → 1⁰ phloem

Which of the following statements regarding the formation of annual ring is false?

(a) Annual rings are formed as a result of seasonal environmental conditions

(b) Tracheids / Vessel elements are larger during periods when water is abundant

(d) Wood formed in the previous years is darker than newer wood

ANSWER(d) Wood formed in the previous years is darker than newer wood

The activity of cambium is under the control of –

(a) Many physiological factors

(b) Many environmental factors

(d) Only photoperiod

ANSWER(c) Both

One cannot determine the age of a tree by its rings, if that tree is located in which of the following forest

(a) Tropical deciduous (b) Tropical evergreen

ANSWER (b) Tropical evergreen

Annual rings are bands of –

(a) Secondary xylem and vascular rays

(b) Secondary phloem and vascular rays

(d) Cork and vascular cortex

ANSWER(a) Secondary xylem and vascular rays

Annual or growth rings consist of –

(a) Alternate rings of heart and early wood

(b) Alternate rings of sapwood and heart wood

(d) Alternate rings of porous and non-porous wood

ANSWER (c) Alternate rings of early and late wood

Autumn wood or late wood is formed

(a) In winter (b) In spring

ANSWER(a) In winter

Early wood is formed –

(a) In winter (b) In spring

ANSWER (b) In spring

In spring season cambium is ____ active and produces ______ wood.

(a) More, late (b) More, early

ANSWER (b) More, early

In winter, season, cambium is ____ active and produces ______ wood.

(a) More, late (b) More, early

ANSWER(c) Less, late (autumn)

Which is true about heat wood/Duramen?

(i) It does not help in water + mineral conduction

(ii) It is dark coloured but soft

(iii) It has tracheary elements filled with tannins, resins,

gums, oil etc.

(iv) It is a peripheral part

(v) Sensitive to microbes + insects, hence least durable

(a) I, III (b) II, III (c) IV, V (d) III, IV

ANSWER(a) I, III

Which is false about sap wood (Alburnum)?

(a) It is peripheral part, lighter in colour

(b) It is involved in ascent of sap

(d) None

ANSWER (d) None

Which one is correct about the cork cambium / phellogen?

(a) Usually cortex of stem forms it during secondary growth of stem

(b) It is a couple of layers thick

(d) All

ANSWER(d) All

Phellogen cuts

(a) Cork / phellogen inside and secondary cortex (phelloderm) outside

(b) Cork outside and phelloderm inside

(d) Both cork and phelloderm outside

ANSWER(b) Cork outside and phelloderm inside

Cork is impervious to water due to

(a) Silica in cell wall (b) Caco₃ in cell wall

ANSWER(c) Suberin in cell wall

The collective term for phelloderm (secondary cortex), cork cambium (phellogen) and crok (phellem) is

(a) Pericycle (b) Periderm (c) Protoderm (d) Procambium

ANSWER (b) Periderm

Annual rings are seen in temperate zone trees because

(a) Xylem cell size varies with season

(b) Heart wood cells alternate with sap wood cells

(d) Resin is deposited in the rings in the stem

ANSWER(a) Xylem cell size varies with season

Bark includes

(a) All tissues exterior to vascular cambium

(b) Periderm + Secondary phloem

(d) All

ANSWER(d) All

Bark includes

(a) Cork + Phellogen + Phellem + Secondary phloem

(b) Periderm only

(d) Secondary xylem + Cambial ring + Secondary phloem

ANSWER(a) Cork + Phellogen + Phellem + Secondary phloem

At places, the cork contains aerating pores called

(a) Stomata (b) Lenticels

ANSWER (b) Lenticels

A lenticel has loosely arranged parenchymatous cells on the outer side. These cells, cut off by phellogen are called

(a) Complimentary (b) Epithem

ANSWER(a) Complimentary

Lenticels are spongy regions on the surface of some woody old stem that function in

(a) Gaseous exchange (b) Transpiration

ANSWER(c) Both

Bark formed early in the season is called ______ bark and towards the end is called ______ bark.

(a) Hard, soft (b) Soft, hard (c) Scaly, ring (d) Ring, scaly

ANSWER(b) Soft, hard

In dicot root, the cambium is

(a) Completely primary in origin

(b) Completely secondary in origin

(d) Derived from endodermis

ANSWER(b) Completely secondary in origin

In dicot root showing secondary growth, cork is ______ formed

(a) Inner to endodermis and external to primary phloem

(b) Outer to endodermis and inner to primary cortex

(d) External to primary cortex

ANSWER (a) Inner to endodermis and external to primary phloem

When secondary growth in thickness is initiated in a dicot

root, which of the following happens first

(a) Portion of conjunctive parenchyma present below the phloem bundle forms cells of vascular cambium

(b) Portion of pericycle above the protoxylem becomes meristematic and forms vascular cambial cells

(d) Cambial initials between the xylem and phloem divide

ANSWER (c) Both

In dicot root, cork cambium is formed A by

(a) Cortex (b) Hypodermis (c) Pericycle (d) Epidermis

ANSWER(c) Pericycle

In the diagram of the cross-section of the vascular bundle of monocot stem given aside, different parts have been indicated by alphabets; choose the answer in which these alphabets have been correctly matched with the parts which they indicate.

(a) A = Bundle sheath, B = Broken phloem, C – Metaphloem, D = Metaxylem, E = Protoxylem, F = Xylem parenchyma,

G = Lysigenous cavity

(b) A = Bundle cap, B = Metaphloem, C = Protophloem, D = Protoxylem, E = Metaxylem, F = Lysigenous cavity, G = Xylem parenchyma

F = Xylem fibres, G = Hydathode

(d) A = Bundle cap, B = Metaxylem, C = Metaphloem,

D = Protoxylem, E = Protophloem, F = Lysigenous cavity,G = Xylem parenchyma

ANSWER (a) A = Bundle sheath, B = Broken phloem, C – Metaphloem, D = Metaxylem, E = Protoxylem, F = Xylem parenchyma, G = Lysigenous cavity

Refer to the accompanying figure and identify the structures indicated in the drawing of root apex

(a) A – Vascular structure, B – Protoderm, C – Root cap

(b) A – Cortex, B – Endodermis, C – Root cap

(d) A – Tunica, B – Protoderm, C – Root cap

ANSWER(c) A – Cortex, B – Protoderm, C – Root cap

Secondary wall is not formed in

(a) Parenchyma (b) Collenchyma

ANSWER(a) Parenchyma

Which one of the following is an effective tissue of growing organs with sufficient elasticity

(a) Parenchyma (b) Collenchyma

ANSWER (b) Collenchyma

A mature sieve tube differs from vessel in

(a) Being nearly dead

(b) Lacking cytoplasm

(d) Absence of lignified walls

ANSWER(d) Absence of lignified walls

Which tissue performs mechanical function in hydrophytic plants

(a) Parenchyma (b) Collenchyma

ANSWER(a) Parenchyma

In pteridophyta and gymnosperms which cells are present in place of companion cell

(a) Sclereids (b) Albuminous cells

ANSWER (b) Albuminous cells

Wood is a common name of

(a) Phloem (b) Secondary xylem

ANSWER (b) Secondary xylem

Both vessels and companion cells are absent in

(a) Angiosperms (b) Pteridophyta

ANSWER (d) In (b) and (c)

Mechanical tissue consisting of living cells is

(a) Sclerenchyma (b) Collenchyma

ANSWER (b) Collenchyma

Dermatogen is a tissue formed by apical meristem and gives rise to

(a) Epidermis (b) Xylem (c) Phloem (d) Pith

ANSWER(a) Epidermis

Intraxyllary phloem may also be called

(a) Internal phloem (b) Included phloem

ANSWER(a) Internal phloem

Aerenchyma is helpful in plants by

(a) Giving flexibility to plants

(b) Giving mechanical strength to plants

(d) Providing buoyancy in hydrophytes

ANSWER(d) Providing buoyancy in hydrophytes

Collenchyma tissue is characterised by

(a) Elongated cells with thickening at the corners

(b) Isodiametric cells with deposits of cellulose and pectin at the corners

(d) Isodiametric cells with thickening all over the cell wall

ANSWER(b) Isodiametric cells with deposits of cellulose and pectin at the corners

The only plant cells without nuclei among the following are

(a) Cambium cells (b) Cells of pericycle

ANSWER (d) Sieve tubes

Grass stem elongates by the activity of

(a) Primary meristem (b) Secondary meristem

ANSWER(c) Intercalary meristem

Collenchyma differs from sclerenchyma

(a) Retaining protoplasm at maturity

(b) Having thick walls

(d) Being meristematic

ANSWER(a) Retaining protoplasm at maturity

Walls of sclerenchyma are

(a) Rigid (b) Lignified

ANSWER (b) Lignified

Tunica corpus theory is related with

(a) Root apex (b) Lateral meristems

ANSWER (d) Shoot apex (apical meristem)

The baloon like outgrowth of parenchyma in the lumen of a vessel is known as

(a) Histogen (b) Tyloses (c) Phellogen (d) Tunica

ANSWER (b) Tyloses

Vessels differ from tracheids

(a) In being derived from single cell

(b) In having vertical rows of cells with cross walls dissolved

(d) They help in the conduction of water

ANSWER(b) In having vertical rows of cells with cross walls dissolved

Vascular cambium and cork cambium are examples of

(a) Lateral meristem

(b) Apical meristem

(d) Intercalary meristem

ANSWER(a) Lateral meristem

Laticiferous vessels instead of laticiferous cells are found in

(a) Ficus (b) Calotropis (c) Poppy (d) Nerium

ANSWER(c) Poppy

Increase in length of plant axis is by

(a) Apical meristem (b) Lateral meristem

ANSWER(a) Apical meristem

Companion cells are usually seen associated with

(a) Fibres (b) Vessels

ANSWER (d) Sieve tubes

Sieve tubes are better suited for translocation, because

(a) Possess broader lumen and perforated cross walls

(b) Are broader than long

(d) Possess no end walls

ANSWER(a) Possess broader lumen and perforated cross walls

Collenchyma differs from parenchyma in having

(a) Living protoplasm (b) Cellulose walls

ANSWER(d) Pectin deposits at corners

Layer of cells between endodermis and vascular bundles is called

(a) Epidermis (b) Pericycle

ANSWER (b) Pericycle

A stele with a central core of xylem surrounded by phloem is called

(a) Protostele (b) Siphonostele

ANSWER (a) Protostele

Secondary roots arise from

(a) Pericycle (b) Sap wood

ANSWER(a) Pericycle

Commercially important fibres of cotton are

(a) Woody fibres of roots

(b) Bark fibres of stem

(d) Phloem fibres of roots

ANSWER(c) Epidermal hairs of seeds

A tissue with spiral thickening in the cell wall capable of absorbing water from air is known as

(a) Velamen (b) Cork

ANSWER(a) Velamen

Vascular bundles in which phloem is found on both sides of xylem are called (In which of the following phloem occurs in two patches)

(a) Collateral (b) Bicollateral

ANSWER (b) Bicollateral

Amphivasal or leptocentric vascular bundles are found in

(a) Cycas and Dryopteris (b) Dracaena and Yucca

ANSWER(b) Dracaena and Yucca

A root hair is formed by

(a) Epidermal cell (b) Endodermal cell

ANSWER(a) Epidermal cell

The layer of cells outside the phloem meant for giving rise to the root branches is called

(a) Cambium (b) Carpus

ANSWER (d) Pericycle

Epidermal outgrowths are known as

(a) Stomata (b) Leaves

ANSWER(c) Trichomes

In root, pericycle gives rise to

(a) Branch root and cork cambium

(b) Cortex and pith

(d) Xylem and phloem

ANSWER(a) Branch root and cork cambium

Vascular bundles in the stem of Cucurbita or Lagenaria are

(a) Collateral (b) Bicollateral

ANSWER (b) Bicollateral

Periblem gives rise to

(a) Pericycle (b) Cortex

ANSWER (b) Cortex

Cuticle is secreted by

(a) Epidermis (b) Endodermis

ANSWER(a) Epidermis

Vascular bundles are derived from (originate from)

(a) Dermatogen

(b) Periderm

(d) Cortex

ANSWER

Adventitious roots in a dicot stem originate from

(a) Radicle

(b) Pericycle or interfascicular parenchyma

(d) None of the above

ANSWER (b) Pericycle or interfascicular parenchyma

Bulliform or motor cells are present in

(a) Dicot stem

(b) Upper epidermis of dicot leaves

(d) Upper epidermis of monocot leaves

ANSWER(d) Upper epidermis of monocot leaves

Water secreting glands or tissues are known as

(a) Tyloses (b) Hydathodes

ANSWER (b) Hydathodes

Vascular bundles having xylem and phloem sit at the same radius is termed as

(a) Concentric (b) Radial

ANSWER(c) Collateral

Water stomata are found in

(a) Plants inhabiting humid region

(b) Plants inhabiting dry regions

(d) Plants lacking normal stomata

ANSWER(a) Plants inhabiting humid region

Raphides are found in

(a) Cirus (b) Colocasia (c) Nerium (d) Mango

ANSWER (c) Nerium

Raphides are

(a) Starch (b) Silica

ANSWER (d) Calcium oxalate

In plants like Nymphaea which is attached emerged hydrophyte, the stomata are present on

(a) Adaxial (upper) surface of leaf

(b) Abaxial (lower) surface of leaf

(d) None of the above

ANSWER(a) Adaxial (upper) surface of leaf

Which of the stoma wall is thick

(a) Inner (b) Outer (c) Lateral (d) Upper

ANSWER(a) Inner

Amphiphloic (bicollateral) condition of stele means that

(a) Phloem is surrounded by xylem

(b) Phloem is on both sides of xylem

(d) Phloem is external to xylem

ANSWER(b) Phloem is on both sides of xylem

Exarch and polyarch vascular bundles occur in

(a) Monocot stem (b) Monocot root

ANSWER (b) Monocot root

Phloem parenchyma is absent in

(a) Vascular rays (b) Monocot stem

ANSWER (b) Monocot stem

Velamen tissue in orchids is found in

(a) Shoot (b) Root (c) Leaves (d) Flowers

ANSWER (b) Root

In root, xylem is

(a) Mesarch

(b) Exarch

(d) Endarch

ANSWER(b) Exarch

In monocot leaf

(a) Bulliform cells are absent from the epidermis

(b) Veins form a network

(d) Mesophyll is not differentiated into palisade and spongy parenchyma

ANSWER(d) Mesophyll is not differentiated into palisade and spongy parenchyma

In dicot root

(a) Vascular bundles are scattered and with cambium

(b) Vascular bundles are arranged in a ring and have Cambium

(d) Xylem is always endarch

ANSWER(c) Xylem and phloem radially arranged

Well developed pith is found in

(a) Monocot stem and dicot root

(b) Monocot and dicot stems

(d) Dicot stem and monocot root

ANSWER(d) Dicot stem and monocot root

The correct situation of mesophyll in isobilateral grass leaf is shown by

(a) Palisade towards adaxial surface

(b) Palisade towards abaxial surface

(d) Palisade along both the surface

ANSWER

Monocot root differs from dicot root in having

(a) Open vascular bundles

(b) Scattered vascular bundles

(d) Radially arranged vascular bundles

ANSWER(c) Well developed pith

Vascular bundles are scattered in

(a) Bryophytes (b) Dicot root

ANSWER (d) Monocot stem

Generally hypodermis in monocots is composed of

(a) Parenchyma (b) Sclerenchyma

ANSWER (b) Sclerenchyma

Polyarch condition is seen in

(a) Monocot stem (b) Monocot root

ANSWER (b) Monocot root

Which of the following is not a characteristic feature of the anatomy of dicotyledonous root

(a) Radial vascular bundles (b) Secondary growth

ANSWER(d) Vascular bundles 15 – 20

Endodermis of dicot stem is also called

(a) Bundle sheath (b) Starch sheath

ANSWER (b) Starch sheath

In a vertical section of a dorsiventral leaf, the protoxylem in its midrid bundle

(a) Faces the dorsal epidermis of the leaf

(b) Faces the ventral epidermis of the leaf

(d) Is surrounded by metaxylem

ANSWER(a) Faces the dorsal epidermis of the leaf

The lacunae in the vascular bundles of monocot stem is

(a) A large sized protoxylem (b) A mucilage canal

ANSWER (d) Lysigenous water cavity

The cell layer located at the periphery in the cross-section of the root is called

(a) Endodermis (b) Epiblema

ANSWER (b) Epiblema

Cortex in the monocot root constitutes

(a) Parenchymatous cells (b) Collenchymatous cells

ANSWER (a) Parenchymatous cells

Monocot root differs from dicot root in

(a) Showing secondary growth (b) No xylem

ANSWER (c) No cambium

Exarch xylem is found in

(a) Root (b) Stem (c) Leaf (d) Rachis

ANSWER(a) Root

Two to five xylem bundle are found in

(a) Monocot root (b) Monocot stem

ANSWER (d) Dicot root

Medullary rays are seen in

(a) Dicot root (b) Monocot root

ANSWER (d) Dicot stem

Vascular bundles have a prominent sheath of fibres in

(a) Dicot root (b) Monocot root

ANSWER(b) Monocot root

Collenchymatous hypodermis is characteristics of

(a) Dicot stem

(b) Monocot stem

(d) Hydrophytes

ANSWER(a) Dicot stem

Vascular bundles in dicot stem are

(a) Conjoint and collateral

(b) Conjoint and closed

(d) Collateral and open

ANSWER(c) Conjoint, collateral and open

In dicot stem, the secondary growth takes place by

(a) Primary cambium

(b) Secondary cambium

(d) Development of cambium in stele and in the cortical region

ANSWER(d) Development of cambium in stele and in the cortical region

Cambium causes growth in

(a) Circumference (b) Width (diameter)

ANSWER (b) Width (diameter)

Conduction of sap in plants occurs through

(a) Heartwood (b) Sapwood

ANSWER(b) Sapwood

“Sap wood” is otherwise called

(a) Duramen (b) Alburnum

ANSWER(b) Alburnum

The function of cork cambium (phellogen) is to produce

(a) Cork and secondary cortex

(b) Secondary xylem and secondary phloem

(d) Secondary cortex and phloem

ANSWER(a) Cork and secondary cortex

Other names of secondary cortex, cork cambium and cork are

(a) Phellem, phelloderm and phellogen

(b) Phellogen, phellem and phelloderm

(d) Phellogen, phelloderm and phellem

ANSWER(c) Phelloderm, phellogen and phellem

In dicot roots, cork cambium is derived from

(a) Epidermis (b) Hypodermis

ANSWER (d) Pericycle

Periderm is made up of

(a) Phellem (b) Phellogen

ANSWER (d) All the above

If four radial vascular bundles are present, then the structure will be

(a) Monocot stem (b) Monocot root

ANSWER (d) Dicot root

Secondary growth is absent in

(a) Dicot stem (b) Gymnosperms

ANSWER(c) Monocot stem

Which of the following is responsible for the growth in circumference or girth of stem and root in plants (in crucifers)

(a) Xylem (b) Phloem

ANSWER (d) Cambium (Meristematic tissue)

Fascicular cambium found in dicot stem is a

(a) Secondary meristem (b) Primary meristem

ANSWER (b) Primary meristem

Which one of the tissue is formed in stems from cells cut off by the cambium on its inner side

(a) Wood fibres (b) Bast fibres

ANSWER(a) Wood fibres

Cork cells are

(a) Dead

(b) Photosynthetic

(d) Meristematic

ANSWER(a) Dead

Youngest layer of secondary xylem in wood of dicot stem is located just

(a) Outside the cambium (b) Inside the cambium

ANSWER (b) Inside the cambium

Annual rings are distinct in plants growing in

(a) Tropical regions (b) Arctic region

ANSWER (d) Temperate region

After two or three years of the secondary growth, the cortex in dicot root

(a) Remains intact (b) Is completely sloughed away

ANSWER(c) Is largely lost

Growth rings are well marked in trees growing in

(a) Shimla (b) Bombay (c) Madras (d) Calcutta

ANSWER(a) Shimla

The xylem which is functional in a dicot tree is

(a) Spring wood (b) Sap wood

ANSWER (b) Sap wood

External protective tissues of plants are (of dicot stem are)

(a) Cork and pericycle (b) Cortex and epidermis

ANSWER (d) Epidermis and cork

Cork cambium is a

(a) Secondary meristem (b) Apical meristem

ANSWER(a) Secondary meristem

The cambium which produces cork is known as

(a) Phelloderm (b) Phellogen

ANSWER (b) Phellogen

In which of the following, there is no differentiation of bark, sap wood and heart wood

(a) Ashok (b) Neem (c) Mango (d) Date palm

ANSWER (d) Date palm

Growth rings (annual rings) are formed by activity of

(a) Cambium (b) Xylem

ANSWER(a) Cambium

An example of monocots showing secondary growth in stems is

(a) Lilium (b) Cocos

ANSWER (d) Yucca or Dracaena

A group of cells alike in form, function and origin is called

(a) Organ (b) Organella

ANSWER(c) Tissue

Most appropriate definition of tissue is

(a) They are composed of only one type of cells

(b) Only one type of cells responsible to perform one common function is called tissue

(d) None of the above

ANSWER(c) A group of one or more types of cells performing one common function is called tissue

All xylem elements when mature are dead except

(a) Tracheids (b) Vessels

ANSWER(c) Xylem parenchyma

Tunica corpus theory was proposed by

(a) Schmidt (b) Strasburger

ANSWER (a) Schmidt

Histogen theory was proposed by

(a) Bailey (b) Haberlandt

ANSWER(c) Hanstein

Deposition of callose is found in

(a) Sclerenchyma (b) Tracheids

ANSWER (d) Sieve tubes

The word “protoderm” was coined by

(a) Haberlandt (b) Nageli

ANSWER(a) Haberlandt

Dermatogen, periblem and plerome are

(a) Permanent tissues (b) Meristematic tissues

ANSWER (b) Meristematic tissues

Parenchymatous tissue is the seat of

(a) Photosynthesis

(b) Storage of food materials

(d) All of the above

ANSWER (d) All of the above

Specialised parenchyma cells which store tannins, oils and crystals of calcium oxalate are called

(a) Sclereids (b) Idioblasts

ANSWER (b) Idioblasts

Tissue composed of non-parenchymatous cells and have isodiametric or irregular shape is called

(a) Sclereids (b) Sclerenchyma fibers

ANSWER(a) Sclereids

Aerenchyma is helpful in plants by

(a) Giving flexibility to plants

(b) Giving mechanical strength to plants

(d) Providing buoyancy in hydrophytes

ANSWER(d) Providing buoyancy in hydrophytes

Collenchyma tissue is characterised by

(a) Elongated cells with thickening at the corners

(b) Isodiametric cells with deposits of cellulose and pectin at the corners

(d) Isodiametric cells with thickening all over the cell wall

ANSWER(b) Isodiametric cells with deposits of cellulose and pectin at the corners

The only plant cells without nuclei among the following are

(a) Cambium cells (b) Cells of pericycle

ANSWER (d) Sieve tubes

Grass stem elongates by the activity of

(a) Primary meristem (b) Secondary meristem

ANSWER(c) Intercalary meristem

Collenchyma differs from sclerenchyma

(a) Retaining protoplasm at maturity

(b) Having thick walls

(d) Being meristematic

ANSWER(a) Retaining protoplasm at maturity

Walls of sclerenchyma are

(a) Rigid (b) Lignified

ANSWER (b) Lignified

Tunica corpus theory is related with

(a) Root apex

(b) Lateral meristems

(d) Shoot apex (apical meristem)

ANSWER(d) Shoot apex (apical meristem)

The baloon like outgrowth of parenchyma in the lumen of a vessel is known as

(a) Histogen (b) Tyloses

ANSWER (b) Tyloses

Vessels differ from tracheids

(a) In being derived from single cell

(b) In having vertical rows of cells with cross walls dissolved

(d) They help in the conduction of water

ANSWER (b) In having vertical rows of cells with cross walls dissolved

Vascular cambium and cork cambium are examples of

(a) Lateral meristem

(b) Apical meristem

(d) Intercalary meristem

ANSWER(a) Lateral meristem

Laticiferous vessels instead of laticiferous cells are found in

(a) Ficus (b) Calotropis

ANSWER(c) Poppy

Increase in length of plant axis is by

(a) Apical meristem (b) Lateral meristem

ANSWER(a) Apical meristem

Companion cells are usually seen associated with

(a) Fibres (b) Vessels

ANSWER(d) Sieve tubes

Sieve tubes are better suited for translocation, because

(a) Possess broader lumen and perforated cross walls

(b) Are broader than long

(d) Possess no end walls

ANSWER (a) Possess broader lumen and perforated cross walls

Collenchyma differs from parenchyma in having

(a) Living protoplasm (b) Cellulose walls

ANSWER (d) Pectin deposits at corners

Cystoliths sometimes deposited in plant cells are crystals of (aggregation of)

(a) Calcium oxalate (b) Calcium carbonate

ANSWER (b) Calcium carbonate

Trachea, tracheids, wood fibres and parenchyma tissues are found in

(a) Xylem (b) Phloem

ANSWER(a) Xylem

Velamen is needed for

(a) Respiration of plants (b) Protection of tissue

ANSWER(c) Absorption of moisture

Tyloses are

(a) Wound healing secretions

(b) Responsible for plugging the lumen of vessels

(d) Callus secretion on sieve plates

ANSWER(b) Responsible for plugging the lumen of vessels

Plant tissues, which are actively growing have water content of

(a) 40 – 50% (b) 65 – 75%

ANSWER (d) 85 – 95%

The tip of the root apical meristem is capped by the histogen known as

(a) Periblem (b) Dermatogen

ANSWER (d) Calyptrogen

Leaves fall from the branches on account of

(a) Completing their duration of life

(b) Formation of abscission layer external to cork

(d) Fall in atmospheric temperature

ANSWER(b) Formation of abscission layer external to cork

The interfibrillar material of the secondary wall is chiefly made up of

(a) Fat (b) Wax

ANSWER(c) Lignin

Tracheids of angiosperms are recognised by the presence of

(a) Bordered pits

(b) Scalariform thickening

(d) None of the above

ANSWER(d) None of the above

The vessel elements of angiosperms differ from other elements of xylem in having

(a) Simple pits on their radial walls

(b) Bordered pits on their lateral walls

(d) Simple perforation on their end walls

ANSWER (d) Simple perforation on their end walls

The casparian strips of root endoderm is contain a mixture of

(a) Cellulose and cutin (b) Cellulose and lignin

ANSWER(c) Lignin and suberin

Plant fibres can originate from

(a) Phloem, xylem, epidermis and sclerenchyma tissues

(b) Phloem, xylem and sclerenchyma tissues

(d) Xylem, epidermis and sclerenchyma tissues

ANSWER(a) Phloem, xylem, epidermis and sclerenchyma tissues

Lignified cell wall is the characteristic feature of

(a) Phloem cells (b) Epidermal cells

ANSWER (d) Xylem cells

The root apex is subterminal because it

(a) Is covered by tunica cells (b) Is covered by root hairs

ANSWER (d) Is covered by root cap

Root cap in dicots is formed from

(a) Protoderm (b) Ground meristem

ANSWER(a) Protoderm

Meristematic cells are

(a) Thin-walled, isodiametric, nucleate and less protoplasmic

(b) Thin-walled, isodiametric, nucleate and densely protoplasmic

(d) Thick-walled, isodiametric, nucleate and less protoplasmic

ANSWER (b) Thin-walled, isodiametric, nucleate and densely protoplasmic

The cells or tissues of plants which have lost the power of division are called

(a) Permanent tissue (b) Promeristem tissue

ANSWER(a) Permanent tissue

Promeristems can be distinguished from primary meristems by

(a) Their power of active division

(b) Their apical position

(d) All the above

ANSWER(d) All the above

Safranine stains which elements of the tissue

(a) Starch elements (b) Lignified elements

ANSWER (b) Lignified elements

Laticiferous vessels are found in

(a) Xylem tissue (b) Phloem tissue

ANSWER(c) Cortex

When protoxylem develops towards the periphery, it is called

(a) Centripetal xylem (b) Centrifugal xylem

ANSWER(a) Centripetal xylem

The calyptrogen of the root apex forms

(a) Rhizoids (b) Root nodule

ANSWER (d) Root cap

The chief function of sieve tubes is

(a) To translocate the organic materials manufactured in the leaves

(b) To conduct minerals

(d) To help the plant in forming wood

ANSWER(a) To translocate the organic materials manufactured in the leaves

In which of the following, growth is sub-apical

(a) Root (b) Shoot

ANSWER(a) Root

Meristematic activity occurs at

(a) Bud (b) Stem apex

ANSWER (b) Stem apex

Which meristem helps in increasing girth

(a) Lateral meristem (b) Intercalary meristem

ANSWER(a) Lateral meristem

Function of storage is performed by

(a) Parenchyma (b) Sclerenchyma

ANSWER(a) Parenchyma

On the basis of origin, meristematic tissues can be classified under how many groups

(a) 2 (b) 3

ANSWER (b) 3

Branch of Botany which deals with the study of internal organization of plants is

(a) Physiology (b) Ecology

ANSWER(c) Anatomy

Collenchymatous tissue is found in

(a) Climbing plants

(b) Aquatic plants

(d) Herbaceous climbers

ANSWER(a) Climbing plants

Parenchymatous tissue is characterised by the

(a) Presence of uniform thickening

(b) Presence of thickening in the corners

(d) Presence of lignified walls

ANSWER(a) Presence of uniform thickening

Presence of lignin in cell wall is characteristic of

(a) Cork (b) Phloem

ANSWER(c) Woody tissue/Xylem

Which of the following are simple tissues

(a) Parenchyma, xylem and phloem

(b) Parenchyma, collenchyma and sclerenchyma

(d) Parenchyma, xylem and sclerenchyma

ANSWER(b) Parenchyma, collenchyma and sclerenchyma

Bordered pits are found in

(a) Phloem (b) Protoxylem

ANSWER(c) Metaxylem

The activity of intercalary meristems adds to

(a) Primary growth (b) Secondary growth

ANSWER(a) Primary growth

The abscission layer is covered by a leaf scar which is composed of

(a) Pectose and cellulose (b) Suberin

ANSWER (b) Suberin

Maximum amount of growth in roots occurs due to

(a) Auxins (b) Root cap region

ANSWER(a) Auxins

Sieve tubes have

(a) Apical and oblique septa

(b) Perforated and longitudinal septa

(d) Simple oblique wall

ANSWER (c) Perforated and oblique septa

Bordered pits are very common in

(a) Monocotyledons (b) Gymnosperms

ANSWER (b) Gymnosperms

Which of the following cells is not totipotent

(a) Pollen grain (b) Sieve cell

ANSWER (b) Sieve cell

Hydrophytes can float on water due to the presence of large number of

(a) Aerenchyma (b) Parenchyma

ANSWER(a) Aerenchyma

Tyloses thickenings are seen in

(a) Phloem cells

(b) Ray parenchyma only

(d) Ray parenchyma and xylem cells

ANSWER(d) Ray parenchyma and xylem cells

Conductive function is performed by

(a) Sclerenchyma (b) Xylem

ANSWER (d) Both (b) and (c)

In a stratified cambium, the fusiform initials are

(a) Long and overlap each other at the ends

(b) Short and overlap each other at the ends

(d) Short or long and overlap each other at the ends

ANSWER(c) Short and arranged in horizontal tiers

The outermost primary meristem gives rise to

(a) Epidermis (b) Procambium

ANSWER (d) All of the above

Which of the following tissues is present in the leaves of Pinus to conduct water and food

(a) Xylem (b) Phloem

ANSWER(c) Transfussion tissue

Epiblema in roots is derived from

(a) Protoderm (b) Procambium

ANSWER(a) Protoderm

Wound healing is due to

(a) Primary meristem (b) Secondary meristem

ANSWER (b) Secondary meristem

A parenchymatous cell which store ergastic substances (waste products) is

(a) Idioblast (b) Phragmoplast

ANSWER(a) Idioblast

Histogen theory states that epidermis is derived from the

(a) Periblem (b) Cambium

ANSWER (d) Dermatogen

Which combination of tissues acts together to provide the support to the hypocotyl of a seedling

(a) Epidermis and collenchyma

(b) Xylem and parenchyma

(d) Xylem and phloem fibres

ANSWER(a) Epidermis and collenchyma

Xylem vessels and phloem companion cells are generally absent in

(a) Ferns and angiosperms

(b) Ferns and gymnosperms

(d) Pteridophytes and thallophytes

ANSWER(b) Ferns and gymnosperms

The tip of the root apical meristem is proceeded by root pocket in

(a) Brassica (b) Eichhornia

ANSWER (b) Eichhornia

The movement of carbohydrates from the leaves of the tree to the root is primarily a function of the

(a) Xylem (b) Phloem

ANSWER (b) Phloem

Plerome gives rise to

(a) Cortex

(b) Epidermis

(d) Vascular tissue system and pith

ANSWER(d) Vascular tissue system and pith

Formation of the roots from the lenticular hyperhydric tissue is of great advantage to a plant in

(a) Their nutritional growth

(b) Tracing the origin of lenticels

(d) Absorption of water and minerals

ANSWER(c) Vegetative reproduction

Which is present in vascular bundles of gymnosperms

(a) Tracheids (b) Vessels

ANSWER(a) Tracheids

Root cap is absent in

(a) Lithophytes (b) Hydrophytes

ANSWER (b) Hydrophytes

Axillary bud and terminal bud are derived from the activity of

(a) Parenchyma (b) Lateral meristem

ANSWER(c) Apical meristem

Vessels are found in

(a) All pteridophyta (b) All angiosperms

ANSWER(d) Both (b) and (c)

Nucleus is absent in

(a) Sieve tube (b) Cambium

ANSWER(a) Sieve tube

At maturity, which of the following is non-nucleated

(a) Sieve cell (b) Companion cell

ANSWER(a) Sieve cell

Lignin is the main constituent of

(a) Woody tissues (b) Growing tissues

ANSWER(a) Woody tissues

Which of the following is absent in phloem of Pinus

(a) Phloem parenchyma (b) Sieve cells

ANSWER(c) Companion cells

Rind of Citrus fruit possesses

(a) Lysigenous glands (b) Schizogenous glands

ANSWER(a) Lysigenous glands

P – protein is found in

(a) Collenchyma (b) Parenchyma

ANSWER(d) Sieve tube

In which meristem the cell divisions occur in all planes

(a) Plate meristem (b) Ground meristem

ANSWER (b) Ground meristem

Tissue is

(a) First level of plant organisation

(b) Second level of plant organisation

(d) Last level of plant organisation

ANSWER (b) Second level of plant organisation

Which of the following cell is totipotent

(a) Meristem (b) Sieve tube

ANSWER(a) Meristem

The meristem in the root is

(a) Terminal

(b) Sub-apical or sub-terminal

(d) Absent

ANSWER(b) Sub-apical or sub-terminal

The xylem fibres are classified into

(a) Protoxylem and metaxylem

(b) Primary and secondary fibres

(d) Long and short fibres

ANSWER(c) Fibre tracheids and fibres

The trees have in them a large amount of

(a) Starch (b) Lignocellulose

ANSWER(c) Cellulose

Meristems are found in

(a) Cycas stem (b) Fern leaf

**ANSWER(a) Cycas stem**

Rod shaped elongated sclereids found in the seed coats of pulses are known as

(a) Astrosclereids (b) Macrosclereids

ANSWER (b) Macrosclereids

The process by which plants becomes woody is

(a) Impregnation (b) Lignification

ANSWER(b) Lignification

Angiosperms have

(a) Tracheids only (b) Vessels absent

ANSWER(c) Vessels present

Promeristem is found in

(a) Embryo (b) Root apex

ANSWER(a) Embryo

Meristematic tissues include

(a) Leaf tips, cork cambium and vascular cambium

(b) Stem and root apices, cork cambium and mature fruits

(d) Mature fruits and leaf tips

ANSWER(c) Stem and root apices, vascular cambium and cork cambium

The complex tissues include

(a) Scleroids (b) Sclerenchyma

ANSWER(c) Secretory tissues

Primary vascular tissues are derived from

(a) Protoderm (b) Procambium

ANSWER (b) Procambium

Epidermis in stem is produced from

(a) Protoderm (b) Procambium

ANSWER(a) Protoderm

Secondary meristems are derived from

(a) Apical meristem (b) Intercalary meristem

ANSWER (d) Permanent tissues

Vascular cambium of the root is an example of

(a) Apical meristem (b) Intercalary meristem

ANSWER(c) Secondary meristem

Intercalary meristems are present in the

(a) Nodal region

(b) Internodal region

(d) Nodal region close to base of plant

ANSWER(a) Nodal region

Intercalary meristem is seen in

(a) Paddy (b) Ficus

ANSWER(a) Paddy

In root the maximum growth occurs

(a) In the presence of high temperature

(b) In the presence of light

(d) Behind the apex

ANSWER(d) Behind the apex

Chlorenchyma cells are chlorophyll containing

(a) Sclerenchyma cells (b) Epidermis

ANSWER(c) Parenchyma

Aerenchyma is found in

(a) Lithophytes (b) Hydrophytes

ANSWER(b) Hydrophytes

Lacunate collenchyma is found in

(a) Althea (b) Cucurbita

ANSWER(b) Cucurbita

Primary growth of a tree

(a) Occurs through the activities of apical meristems

(b) Occurs through the activity of a vascular cambium

(d) Occurs only in the first year of the tree’s life

ANSWER(a) Occurs through the activities of apical meristems

The shape of fibre cell is

(a) Rectangular

(b) Elongated with tapering ends

(d) Short and oblong

ANSWER(b) Elongated with tapering ends

One of the functions of aerial stem is

(a) Fixation

(b) Absorption of water

(d) Conduction of water and minerals

ANSWER(d) Conduction of water and minerals

Parenchyma cells in between xylem and phloem bundles in roots are called as

(a) Conjunctive tissue (b) Complimentary tissue

ANSWER(a) Conjunctive tissue

Phloem parenchyma is absent in

(a) Sunflower stem (b) Maize stem

ANSWER (b) Maize stem

Callose deposition is found in

(a) Tracheids (b) Companion cells

ANSWER(c) Sieve areas

The tissue which is living but does not possess nucleus in mature stage is

(a) Companion cell (b) Vessels

ANSWER(c) Sieve tube

Which of the following is absent in the primary and secondary structure of stem of Pinus

(a) Sieve tubes (b) Mucilage duct

ANSWER(c) Companion cells

Xylem position in secondary xylem is

(a) Exarch (b) Endarch

ANSWER(d) None of these

Dead cells of root are supplied by

(a) Calyptrogen (b) Protoderm

ANSWER(a) Calyptrogen

Quiescent centre is found in

(a) Stem tip (b) Root tip

ANSWER (b) Root tip

The function of a vessel is

(a) Condution of food

(b) Conduction of water and minerals

(d) None of these

ANSWER(b) Conduction of water and minerals

The cell wall of xylem cells is rich in

(a) Lipid (b) Protein

ANSWER(c) Lignin

Who coined the term ’tissue’

(a) Hooke (b) Grew

ANSWER (b) Grew

Term ‘meristem’ was coined by

(a) N. Grew (b) Strasburger

ANSWER (d) C. Nageli

The matured tissues are characterized by

(a) Thick walls

(b) Less vacuolated cytoplasm

(d) All the above

ANSWER(d) All the above

The cells of a meristematic tissue are characterized by

(a) Thin walls and absence of intercellular spaces

(b) Highly vacuolated cytoplasm

(d) All the above

ANSWER(d) All the above

Which of the following is a meristematic tissue

(a) Epidermis (b) Cortex

ANSWER (d) Cambium

Which of the following wall layers are absent from a meristematic cell

(a) Middle layers (b) Primary wall

ANSWER(c) Secondary wall

Where would you look for an active cell division in a plant

(a) In cortex (b) In pith

ANSWER(c) At tip of the stem

Which tissue makes up the embryo of a seed

(a) Meristematic tissue (b) Permanent parenchyma

ANSWER(a) Meristematic tissue

In which of the following situations an intercalary meristem can be present

(a) Apex of a stem (b) Apex of a root

ANSWER (c) Petiole and internode

Intercalary meristem results in

(a) Secondary growth (b) Primary growth

ANSWER(b) Primary growth

Meristem is defined as a plant tissue where

(a) Cell conserves food and supply it to new ones

(b) Cells mature and add to the bulk of a plant

(d) Cells divide continuously to give rise to new ones

ANSWER (d) Cells divide continuously to give rise to new ones

The length of a plant axis increases by

(a) Apical meristem (b) Lateral meristem

ANSWER(a) Apical meristem

Which of the following plants grow by a single “apical cell”

(a) Monocots (b) Dicots

ANSWER (d) Bryophytes

What is the shape of an apical cell in gametophytes of bryophytes and pteridophytes

(a) Spherical (b) Tubular

ANSWER (d) Pyramid like

Histogens are component of or The histogens are differentiated in

(a) Apical meristem (b) Intercalary meristem

ANSWER(a) Apical meristem

How many histogens are present at the apex of root

(a) 1 (b) 2

ANSWER(c) 3

Histogen theory is more applicable for

(a) Root apex (b) Shoot apex

ANSWER(a) Root apex

Which tissue is derived from plerome

(a) Epidermis (b) Endodermis

ANSWER (d) Vascular tissue

Primary meristem of root is

(a) Cambium (b) Apical meristem

ANSWER (b) Apical meristem

Root cap regenerates or produced from

(a) Calyptrogen (b) Pleurome

ANSWER(a) Calyptrogen

Multilayered root cap occurs in

(a) Banyan (b) Pandanus

ANSWER (b) Pandanus

Root cap is not found in

(a) Hollyhock (b) Pistia

ANSWER (b) Pistia

Tunica differs from corpus in

(a) Position (b) Rate of growth

ANSWER(c) Plane of division

In how many planes tunica divides

(a) One (b) Two

ANSWER(a) One

Tunica is a rib meristem because it divides in

(a) Anticlinal plane only (b) Periclinal plane only

ANSWER(a) Anticlinal plane only

Anticlinal divisions in an organ cause its growth in

(a) Length (b) Area

ANSWER (d) Circumference

Periclinal division in a cell takes place by

(a) Vertical cleavage (b) Transverse cleavage

ANSWER (d) Tangential cleavage

Which tissue is derived from tunica

(a) Epidermis (b) Endodermis

ANSWER(a) Epidermis

Korper Kappe theory is applicable for

(a) Stem apex (b) Root apex

ANSWER (b) Root apex

Korper Kappe theory was proposed by

(a) Nageli (b) Schuepp

ANSWER (b) Schuepp

Popham identifies a normal angiospermous corpus to be composed of

(a) Single zone (b) Two zones

ANSWER(c) Three zones

There is no distinction between tunica and corpus layers in the stem apices of

(a) Some pteridophytes (b) Some gymnosperms

ANSWER(d) All angiosperms

The primary growth is effected by

(a) Primary cambium (b) Promeristem

ANSWER (b) Promeristem

What is a promeristem ? It is a meristem which produces

(a) Epidermis

(b) Vascular tissue

(d) Other secondary meristems

ANSWER(c) Other primary meristems

From which of the following tissue the protoderm is derived

(a) Procambium (b) Cambium

ANSWER(c) Promeristem

Name the tissue from which procambium and primary structures of plant originates

(a) Phellogen (b) Promeristem

ANSWER(c) Calyptrogen

‘Protoderm’ and ‘procambium’ terms were coined by

(a) Haberlandt (b) Hanstein

ANSWER(a) Haberlandt

Which of the following are primary meristems

(a) Pleurome (b) Protoderm

ANSWER (d) All the above

Which one of the following is not a primary meristem

(a) Endodermis (b) Protoderm

ANSWER(a) Endodermis

What is a secondary meristem ? One which originates from

(a) Promeristem (b) Primary meristem

ANSWER(c) Permanent tissue

Which of the following are secondary meristems

(a) Protoderm (b) Procambium

ANSWER(c) Cork cambium

Injured parts of a plant are repaired by

(a) Primary meristem (b) Lateral meristem

ANSWER (b) Lateral meristem

A cap like region of slowly dividing or inactive cells in the middle of highly meristematic cells (between meristem and root cap) is

(a) Somatic zone (b) Vegetative zone

ANSWER(c) Quiescent centre

DNA content of quiescent zone is

(a) High (b) Low

ANSWER(b) Low

What is piliferous layer

(a) Outermost layer of leaf with cuticle

(b) Outermost layer of stem with lenticel

(d) Outermost layer of root with hairs

ANSWER(d) Outermost layer of root with hairs

Which type of tissue is immediately produced from a meristem

(a) Parenchyma (b) Xylem

ANSWER(a) Parenchyma

How do the leaves of a higher plant grow

(a) By apical or lateral growth

(b) By marginal or intercalary growth

(d) By apical and intercalary growth

ANSWER(b) By marginal or intercalary growth

Growth of plant is different from the growth of animals in

(a) Being indefinite

(b) Being located

(d) Having an indefinite span

ANSWER (b) Being located

How many type of cells constitute a simple permanent tissue

(a) One (b) Two

ANSWER (a) One

Layer of cells between endodermis and vascular bundles is called

(a) Epidermis (b) Pericycle

ANSWER (b) Pericycle

A stele with a central core of xylem surrounded by phloem is called

(a) Protostele (b) Siphonostele

ANSWER(a) Protostele

CHAPTER NOTES

M	T	W	T	F	S	S
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2	3	4	5	6	7	8
9	10	11	12	13	14	15
16	17	18	19	20	21	22
23	24	25	26	27	28	29
30	31

ANATOMY OF FLOWERING PLANT IMPORTANT QUESTIONS