CHAPTER 6 ANATOMY OF FLOWERING PLANTS PRACTICE QUESTIONS
CHAPTER NOTES
Apical meristems
A) Occur at root tip B) Produce primary tissues
C) Regenerate parts of plant D) Both A & B
During leaf formation and stem elongation, some cells of apical meristem left behind form-
A) Primary cell. B) Intercalary meristem
C) Axillary bud D) Interfascicular cambium
Intercalary meristem
A) Occur in grasses B) Occur between mature tissue
C) Both A & B D) None
Primary meristem
A) Appear later in life of plant B) Appear early in life of plant
C) Regenerates parts of plant D) Both B & C
Primary body of plant is formed by-
A) Meristem B) Vascular cambium
C) Both A & B D) None
Lateral meristem are-
A) Type of primary meristem
B) Appearing early in life of plant
C) Responsible for producing secondary tissues
D) Both A & B
Secondary meristem include-
A) Fascicular vascular cambium B) Cork cambium
C) Secondary phloem D) Both A and B
Meristem that occur in mature region of root and shoot of plant-
A) Apical meristem B) Intercalary meristem
C) Lateral meristem D) None of these
Identify the correct labels-
A) (i) – cortex, (ii) – Protoderm, (iii) –initial of central cylinder & cortex
B) (i) – Protoderm, (ii) – cortex, (iii) – central cylinder
C) (i) – central cylinder, (ii) – cortex, (iii) – Protoderm
D) (i) – central cylinder, (ii) – Protodrem, (iii) – cortex
Identify the axillary bud in given figure –
A) (i) B) (ii) C) (iii) D) Both (ii) and (iii)
Cell of permanent tissue
A) Divide regularly to repair damage B) Divide occasionally
C) Do not divide generally D) Both (B) and (C)
Simple tissue are –
A) Meristematic tissues having all cells similar in structure and function
B) Meristematic tissues having different types of cells
C) Permanent tissues having all cells similar in structure and function
D) Permanent tissues having many different type of cells
Complex tissues are –
A) Meristematic tissues having all cells similar in structure and function
B) Permanent tissues having all cells similar in structure and function
C) Meristematic tissues having different types of cells
D) Permanent tissues having different types of cells.
Simple tissues are made of
A) Some types of cells of similar origin
B) Only one type cells
C) Different types of cells of same origin
D) Different types of cells of different origin
Major component within organs is formed by –
A) Collenchyma B) Sclerenchyma
C) Parenchyma D) All of these
Walls of parenchyma are made of–
A) Proteose B) Cellulose C) Keratin D) Pectin
Parenchyma performs functions –
A) Photosynthesis B) Storage
C) Secretion D) All of the above
Parenchyma cells are generally –
A) Of varying diameters, with no intercellular space
B) Of similar diameters, with no intercellular space
C) Of similar diameters, with small intercellular space
D) Both B and C
Where does collenchyma occur?
A) Below endodermis in most monocots
B) Below epidermis in most monocots
C) Below epidermis in most dicots
D) Below endodermis in most dicots
Cell of collenchyma are thickened at corners due to deposition of
A) Cellulose B) Hemicellulose
C) Pectin D) All of these
Collenchyma cells –
A) May be polygonal and never contain chloroplasts.
B) May be polygonal and often contain chloroplasts
C) May be oval and contain chloroplasts
D) Both B and C
Collenchyma cells
A) Have no intercellular spaces
B) Have large intercellular spaces
C) May or may not have intercellular spaces
D) None of these
Mechanical support in plants is provides by
A) Parenchyma B) Collenchyma
C) Sclerenchyma D) Both B and C
Choose the best option
A) All collenchymatous cells Assimilate food
B) No collenchymatous cells assimilate food
C) Some collenchymatous cells do not assimilate food
D) All collenchymatous cells do not assimilate food
Collenchyma provide mechanical support to –
A) Young stem B) Petiole of leaf organs only
C) Organs only D) All of these
Identify the given figure
A) (i) – parenchyma, (ii) – fibre, (iii) – sclereid, (iv) – collenchyma
B) (i) – sclereids, (ii) – fibre, (iii) – parenchyma, (iv) collenchyma
C) (i) – collenchyma, (ii) – sclerids, (iii) – fobres, (iv) – parenchyma
D) (i) – collenchyma, (ii) fibre, (iii) – sclereids, (iv) – parenchyma
Sclenenchyma cells are –
A) Usually dead with protoplast B) Usually dead without protoplast
C) Usually living with protoplast D) Usually living without protoplast
Read the given statements –
(i) Sclereids are found in leaves of tea.
(ii) Fibres generally occur single in various plant parts.
(iii) Sclerenchyma provides mechanical support to young stems.
(iv) Parenchyma cells have thick walls.
(v) Collenchyma cells are thickened at corners.
How many are correct
A) 2 B) 3 C) 4 D) 1
Pulp of pear has which type of sclerenchyma cells-
A) Sclereids B) Fibres C) Tracheids D) Trichomes
Complex tissues are –
A) Made of one of cells, working as unit
B) Made of many types of cells, working as a unit
C) Made of one type of cells, working separately
D) Made of many types of cells, working separately
Xylem has following functions except–
A) Conducting water from roots to upper plant part
B) Conducting minerals from leaves to roots
C) Providing mechanical strength to plant parts
D) Conducting sap from roots to leaves
Xylem tissue consists of-
A) Sieve tube, companion cells, fibres, parenchyma
B) Sieve cells, vessels, fibres, parenchyma
C) Vessels, tracheids, sieve tube, fibres
D) Vessels, tracheid, fibres, parenchyma
Gymnosperms lack-
A) Xylem vessels B) Companion cells
C) Sieve tubes and companion cells D) All of the above
Phloem of gymnosperms possess-
A) Albuminous cells B) Companion cells
C) Sieve tube D) Both (B) and (C)
Xylem has all dead cells except-
A) Xylem parenchyma B) Xylem fibres
C) Xylem vessels D) Xylem tracheids
Ray parenchymatous cells help in –
A) Radial conduction of food B) Axial conduction of water
C) Axial conduction of food D) Radial conduction of water
Food materials can be stored in xylem parenchyma in all of these forms except –
A) Starch B) Fat C) Tannin D) None
In stems,
A) Protoxylem lies towards centre and metaxylem towards periphery, called endarch
B) Protoxylem lies towards centre and metaxylem towards periphery, called exarch
C) Metaxylem lies towards centre and protoxylem towards periphery called endarch
D) Metaxylem lies towards centre and protoxylem towards periphery called exarch
In roots –
A) Protoxylem lies towards centre and metaxylem towards periphery, called endarch
B) Protoxylem lies towards centre and metaxylem towards periphery, called exarch
C) Metaxylem lies towards centre and protoxylem towards periphery called endarch
D) Metaxylem lies towards centre and protoxylem towards periphery called exarch
A maturāe sieve elements –
A) Have peripheral nucleus
B) Have peripheral cytoplasm and no nucleus
C) Have no vacuole and no nucleus
D) Have large vacuole and peripheral nucleus
Phloem fibres –
A) Are made of parenchyma B) Are made of collenchyma
C) Present in primary phloem D) Present in secondary phloem
Which of the statements about Phloem is correct?
A) Protoploem consists of narrow sieve tube
B) Metaphloem consists of narrow sieve tubes
C) Protopholem consists of bigger sieve tubes
D) Both protophloem and metaphloem have bigger sieve tubes.
The three types of tissue systems – epidermal ground and vascular systems are classified based on their-
A) Function B) Location C) Structure D) Both (B) and (C)
Outer layer of primary plant body is –
A) Epiblema B) Epidermis C) Epicarp D) Ectodermis
Waxy layer on epidermis-
A) is called trichome B) is called epiblema
C) is absent in roots D) help in exchange of gases
Consider the following statements –
i) Epidermal cells are parenchymatous.
ii) Epidermis is usually two – layered.
iii) Stomata are usually present in epidermis of stem.
iv) Outer walls of guard cells are thick and inner walls are thin.
v) Subsidiary cells are epidermal cells.
How many of these statements are incorrect?
A) 2 B) 1 C) 3 D) 4
Stomatal apparatus consists of –
A) Stomatal aperture only B) Stomatal aperture and guard cells
C) Subsidiary cells D) Both (B) and (C)
Epidermal cells modify to form
A) Trichomes only B) Trichomes, Root hairs, Stomata
C) Trichomes, Root hair, Subsidiary cells D) Root hairs only
Trichomes –
A) Present on stem and are multicellular
B) Present on root and are multicellular
C) Present on stem and are unicellular
D) Present on root and are unicellular
All tissues are included in ground tissue except –
A) Cortex B) Pith C) Pericycle D) Epidermis
In leaves, mesophyll is present in –
A) Epidermal tissue system B) Ground tissue system
C) Vascular tissue system D) Both (A) & (B)
In dicots stem, which condition is present
A) Cambium present between xylem & phloem, known as closed type vascular bundle
B) Cambium absent between xylem & phloem, known as closed type vascular bundle.
C) Cambium present outside xylem & phloem, known as open type vascular bundle
D) Cambium present between xylem & phloem, known as open type vascular bundle.
A : Monocot have closed type of vascular bundles
R : monocots do not show secondary growth
A) Both A and R are correct and R is correct explanation of A
B) Both A & R are correct and R is not the explanation of A
C) A is correct and R is incorrect
D) Both A & R are incorrect
Read given statements in context of given figure
i) A is xylem and B is phloem
ii) A is phloem and B is xylem
iii) Primary xylem in figure is endarch type.
iv) Primary in figure is exarch type.
Choose the correct statements
A) (i) and (iii) B) (i) and (iv) C) (ii) and (iii) D) (ii) and (iv)
The given figure can be vascular bundle of
A) Shoot of sunflower B) Shoot of grass
C) Root of sunflower D) Root of grass
For understand the tissue organization of roots, stems and leaves better, it is convenient to study–
A) Longitudinal section of young and growing zones of organs
B) Transverse section of young & growing zones of organs
C) Longitudinal section of mature zones of organs
D) Transverse section of mature zones of organs
Choose correct order of cells from outside to inside in a sunflower root-
A) Epidermis – endodermis – cortex – pericycle
B) Epiblema – cortex – endodermis – pericycle
C) Epiblema – cortex – pericycle – endodermis
D) Epidermis – endodermis – pericycle – cortex
Suberin is deposited on –
A) Tangential walls of epidermal cells
B) Radial walls of cortical cells
C) Tangential walls of endodermal cells
D) radial walls of epidermal cells
The substance that casparian strips is made up of is –
A) waxy B) water – impermeable
C) suberin D) all of these
Initiation of lateral roots in dicot during secondary growth occurs in –
A) Endodermal cells B) Pericycle
C) Medullary ray D) Conjunctive tissue
Initiation of vascular cambium in dicot root during secondary growth occurs from –
A) Thin walled parenchymatous cells
B) Thick walled collenchyma cells
C) Thinn walled endodermal cells
D) Thick walled parenchyma cells
Which of the following is true about
A) Parenchymatous and lie outside phloem
B) Parenchymatous and lie outside endodermis
C) Collenchymatous and lie between xylem and phloem
D) Parenchymatous and lie between xylem & phloem
Endodermis is present in dicot root in
A) Two layer with little intercellular spaces
B) Two layer without any intercellular spaces
C) Single layer with little intercellular spaces
D) Single layer without any intercellular spaces
Cortex of dicot root consists of –
A) Multi layers of thick walled parenchyma
B) Multi layers of thin walled parenchyma
C) Single layer of thick walled parenchyma
D) Single layer of thin walled parenchyma
Innermost layer of cortex in dicot root is –
A) Pericycle B) Hypodermis C) Endodermis D) Pith
Parenchyma cells are generally thin walled. An example of thick-walled parenchyma in dicot root is
A) Pith B) Pericycle C) Endodermis D) Hypodermis
Stele includes
A) Endodermis, pericycle, pith
B) Endodermis, pericycle, vascular bundles
C) Pericycle, vascular bundle, pith
D) Endodermis, vascular bundle, pith
Identify the figure (i) & (ii)
A) (i)– T.S of dicot root (ii) – T.S of monocot root
B) (i) – T.S of dicot stem (ii) – T.S of monocot stem
C) (i) – T.S of monocot root (ii) – T.S of dicot root
D) (i) – L.S of monocot stem (ii) – L.S of dicot root
Identify the correct labels of monocot root T.S
A) (i)- cortex, (ii)- endodermis, (iii)- pericycle
B) (ii)- cortex, (i)- endodermis, (iii)- pericycle
C) (iii)- cortex, (ii)- endodermis, (i)- pericycle
D) (i)- cortex, (iii)- endodermis, (ii)- pericycle
Xylem bundles in monocot root-
A) Are fewer than dicot root B) Are less than six
C) Are polyarchy D) All of the above
Secondary growth in monocot roots occur-
A) By vascular cambium B) By interfascicular cambium
C) Both A & B D) None of these
Epidermis of dicot stem-
A) Is called epiblema B) Lacks stomata
C) Has a thin layer of cuticle D) Lacks trichomes
Cortex in dicot stem is found between-
A) Epidermis and endodermis B) Endodermis and pericycle
C) Pericycle and pith D) Endodermis and pith
Hypodermis of dicot stem is made of-
A) Parenchyma B) Collenchyma
C) Sclerenchyma D) All of these
Starch sheath is found in dicot stem in- –
A) Endodermis B) Cortex C) Pericycle D) Pith
Cortical cells dicot stem has-
A) No intercellular spaces
B) Inconspicuous intercellular spaces
C) Conspicuous intercellular spaces
D) Very large intercellular spaces
Pericycle of dicot stem is present in the form of-
A) Semi – square patches of collenchyma
B) Semi – lunar patches of sclerenchyma
C) Semi – lunar patches of collenchyma
D) Semi – lunar patches of parenchyma
Medullary rays are –
A) Axially placed, parenchymatous
B) Axially placed, collenchymatous
C) Radially placed, parenchymatous
D) Radially placed, collenchymatous
Location of medullary rays –
A) Above endodermis
B) Between endodermis and pericycle
C) Between pericycle and cortex
D) Between vascular bundles
In sunflower stem, vascular bundle is-
A) Conjoint, closed, exarch protoxylem
B) radial, open, endarch protoxylem
C) conjoint, open, exarch protoxylem
D) conjoint, open, endarch protoxylem
which of these is incorrect about pith of dicot stem?
A) Parenchymatous cells B) No intercellular space
C) Central portion of stem D) Large intercellular space
Identify the correct labels
A) (i)- protoxylem, (ii)- cambium, (iii)-phloem, (iv)- metaxylem
B) (ii)- protoxylem, (iv)- cambium, (i)-phloem, (iii)- metaxylem
C) (iv)- protoxylem, (i)- cambium, (ii)- phloem, (iii)- metaxylem
D) (iii)- protoxylem, (iv)- cambium, (i)- phloem, (ii)- metaxylem
Identify endodermis in the given figure-
A) (i) B) (ii) C) (iv) D) (iii)
Select the correct match of columns A & B
Column A Column B
i Hypodermis of grasses stem 1) parenchyma
ii Hypodermis of sunflower stem 2) Collenchyma
iii Bundle sheath of grasses stem 3) Sclerenchyma
iv Ground tissue of grasses stem
A) (i)- 2, (ii)- 3 B) (iv)- 1, (iii)- 1 C) (iii)- 3, (i)- 3 D) (ii)- 1, (iv)- 3
In monocot stem,
A) Peripheral vascular bundles are generally smaller than central ones
B) Central vascular bundles are generally smaller than peripheral ones
C) Both peripheral and central are almost same sized
D) None of these
Phloem parenchyma is absent in-
A) Gymnosperms B) Monocots C) Both D) None
The given figure is
A) Monocot root B) Dicot root C) Monocot stem D) Dicot stem
Read the given statements and choose the number of correct statements
(i) Leaf of dicot lack cuticle
(ii) Stomata on adaxial side of epidermis is more in number than abaxial side
(iii) Mesophyll is the ground tissue in dicot leaf
(iv) The adaxial epidermis may lack stomata
A) 1 B) 2 C) 3 D) 4
In the leaf of sunflower, mesophyll lies-
A) Between epidermis and cortex
B) Between adaxial epidermis and abaxial epidermis
C) Between endodermis and pericycle
D) Between pericycle and vascular bundles
Which of the given statements about dicot leaf is incorrect?
A) The abaxial palisade parenchyma is made of elongated cells
B) Spongy parenchyma is oval or round
C) The spongy parenchyma has large spaces between cells
D) The parenchyma on adaxial side of leaf are arranged vertically & parallel to each other
Consider the statements given below-
a) Size of vascular bundle in leaf depend upon size veins
b) Vascular bundles in leaf are surrounded by bundle sheath cells
A) (a) is correct & (b) is incorrect B) (a) is incorrect & (b) is correct
C) Both are correct D) Both ate incorrect
Identify the correct option in context of given figures
A) (i)- dicot stem, (ii)- monocot stem
B) (i)- dicot leaf, (ii)- monocot leaf
C) (i)- monocot stem, (ii)- dicot stem
D) (i)- monocot leaf, (ii)- dicot leaf
Which of the following is correct for isobilateral leaves?
A) Present in all angiosperms
B) Two different types of mesophyll are found
C) Stomata on both surfaces of mesophyll
D) Has similar sizes of vascular bundles
In grasses, large, empty, colourless cells are called-
A) Subsidiary cells B) Complementary cells
C) Cortical cells D) None of these
Identify the incorrect statement in regards to bulliform cells-
A) Present on abaxial side B) Empty cells
C) Makes leaf curl inward when flaccid
D) Helps to minimize water loss
Identify correct labels for given figure.
A) (i)- adaxial epidermis (ii)- abaxial epidermis, (iii)- xylem (iv)- phloem
B) (ii)- adaxial epidermis (i)- abaxial epidermis, (iii)- xylem (iv)- phloem
C) (i)- adaxial epidermis (ii)- abaxial epidermis, (iv)- xylem (iii)- phloem
D) (ii)- adaxial epidermis (i)- abaxial epidermis, (iv)- xylem (iii)- phloem
Increase in girth of plant-
A) Involves lateral meristem B) Involves intercalary meristem
C) Involves apical meristem D) All of these
Vascular cambium-
i) Is meristematic
ii) Present in patches between xylem and phloem in young stem
iii) Present as a single layer between xylem and phloem in young stem
iv) Forms complete ring later How many of the above statements are correct-
A) 1 B) 2 C) 3 D) 4
In dicot stem, cambium cells present between xylem & phloem is-
A) Intrafasicular cambium B) Interfascicular cambium
C) Cork cambium D) Cortical cambium
Interfasicular cambium is formed by-
A) Pericycle cells B) Endodermal cells
C) Medullary cells D) Complementary cells
Cambial ring cuts off new cells-
A) Towards inner side only B) Towards outer side only
C) Towards inner and outer side both D) Along its own axis
Cambial ring cuts off new cells –
A) Towards pith, called secondary phloem
B) Towards pith, called secondary cambium
C) Towards pith, called secondary medullary rays
D) Towards pith, called secondary xylem
Cambial ring cut off –
A) More cells on outer side B) More cells on inner side
C) Equal cells on both sides D) Cells randomly
Assertion: secondary xylem form a compact mass.
Reason: cambium is lesser active on outer side comparatively.
Choose the best option-
A) Assertion & Reason both are correct and Reason is correct explanation for Assertion.
B) Assertion & Reason both are correct and Reason is not the correct explanation for Assertion
C) Assertion is correct but Reason is incorrect
D) Assertion is incorrect but Reason is correct
Secondary medullary rays are-
A) Narrow bands of parenchyma
B) Narrow bands of meristem
C) Wide bands of parenchyma
D) Wide bands of meristem
Which of these is correct about activity of cambial ring?
A) Secondary xylem crushes primary xylem
B) Secondary xylem crushes primary phloem
C) Secondary xylem crushes secondary phloem
D) Both B & C
Identify the secondary xylem in the figure-
A) (i) B) (ii) C) (iii) D) (iv)
Activity of cambium is under control of-
A) Physiological factors B) Environmental factors
C) Both A & B D) Depend on season only
In spring, cambium produce
A) Less xylary elements, having vessels with wider cavities
B) More xylary elements, having vessels with wider cavities
C) Less xylary elements, having vessels with narrow cavities
D) More xylary elements, having vessels with narrow cavities
Select the characters of autumn wood from the list-
i) Light in colour ii) Dark in colour
iii) Low density
iv) High density
v) Wider vessels vi) Narrow vessels
A) i, iii, v B) i, iv, vi C) ii, iv, vi D) ii, iii, v
Annual rings are constituted by-
A) Alternate concentric rings of 3 types of woods
B) continuous concentric rings of 3 types of woods
C) Alternate concentric rings of 2 types of woods
D) continuous concentric rings of 2 types of woods.
Heartwood is-
A) Light in colour B) Dark in colour
C) Alternately light & dark in colour D) None of these
Consider the following statements about heartwood-
i) Lighter in colour
ii) Comprises dead elements
iii) Suberized walls
iv) Resistant to attack of micro-organisms
v) Conducts water and provide mechanical support to plant
How many of the statements are correct?
A) 2 B) 3 C) 4 D) 5
Assertion: Cork cambium is needed due to activity of vascular cambium
Reason: Phellogen is present below endodermis
Select the appropriate answer-
A) Both Assertion & Reason are correct
B) Assertion is correct and Reason is wrong
C) Assertion is wrong and Reason is correct
D) Both Assertion and Reason are wrong
Phellogen is made of-
A) Narrow, thick-walled, meristematic cells
B) Narrow, thin-walled, parenchyma
C) Narrow, thick-walled, parenchyma
D) Narrow, thin-walled, meristem
Phellogens cuts-
A) Cork on inner side and phelloderm on outside
B) Phellem on inner and secondary cortex on outside
C) Bark on outside and secondary cortex on inside
D) Phellem on outside and phelloderm on inside
Cork is impervious to water due to
A) Lignin B) Suberin C) Keratin D) Cellulose
Bark includes –
A) Secondary xylem and periderm
B) Secondary phloem and periderm
C) Pericycle and vascular cambium
D) Pith and stele
Phlloderm is –
A) Parenchymatous B) Collenchymatous
C) Sclerenchymatous D) Meristematic
Lenticles are
A) Circle – shaped B) Rectangular
C) Lens – shaped D) Polygonal shaped
Select the correct labels –
A) (i) – complimentary cells B) (ii) – cork cambium
C) (iii) – secondary cortex D) (iv) – epidermis
In sunflower root. Vascular cambium is originated from tissues –
A) Below phloem bundle B) Of pericycle
C) Of interfascicular cambium D) Both (A) & (B)
Secondary growth does not occur in –
A) Gymnosperm stem B) Gymnosperm root
C) Monocot D) All of these
Identify the cambial ring –
A) (i) B) (iii) C) (iv) D) (ii)
Secondary xylem and phloem in dicot stem are produced by___________.
(a) apical meristems (b) vascular cambium (c) axillary meristems (d) phellogen
Casparian strips occur in:
(a) Epidermis (b) Pericycle (c) Endodermis (d) Cortex
Plants having little or no secondary growth are__________.
(a) grasses (b) deciduous angiosperms (c) cycads (d) conifers
Stomata in grass leaf are __________.
(a) dumb-bell shaped (b) kidney shaped (c) barrel shaped (d) rectangular
Identify the wrong statement in context of heartwood.
(a) It is highly durable.
(b) It conducts water and minerals efficiently.
(c) It comprises dead elements with highly lignified walls.
(d) Organic compounds are deposited in it.
The vascular cambium normally gives rise to _________.
(a) primary phloem (b) secondary xylem
(c) periderm (d) phelloderm
Which of the following facilitates opening of stomatal aperture?
(a) Decrease in turgidity of guard cells.
(b) Radial orientation of cellulose microfibrils in the cell wall of guard cells.
(c) Longitudinal orientation of cellulose microfibrils in the cell wall of guard cells.
(d) Contraction of outer wall of guard cells.
Which of the following is made up of dead cells?
(a) Collenchyma (b) Phellem (c) Phloem (d) Xylem parenchyma
Root hairs develop from the region of ______.
(a) elongation (b) root cap (c) meristematic activity (d) maturation
Specialised epidermal cells surrounding the guard cells are called _______.
(a) complementary cells (b) subsidiary cells
(c) bulliform cells (d) lenticels
Vascular bundles in monocotyledons are considered closed because
(a) cambium is absent. (b) there are no vessels with perforations.
(c) xylem is surrounded all around by phloem.
(d) a bundle sheath surrounds each bundle.
A major characteristic of the monocot root is the presence of
(a) scattered vascular bundles.
(b) vasculature without cambium.
(c) cambium sandwiched between phloem and xylem along the radius.
(d) open vascular bundles.
Read the different components from (A) to (D) in the list given below and identify 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 (C) Secondary phloem (D) Phellem
(a) A, B, D, C (b) D, A, C, B (c) D, C, A, B (d) C, D, B, A
In a ring girdled plant
(a) the root dies first. (b) the shoot and root die together.
(c) neither root nor shoot will die. (d) the shoot dies first.
Transmission tissue is characteristic feature of _________.
(a) solid style (b) dry stigma (c) wet stigma (d) hollow style
You are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structures will you use to distinguish between the two?
(a) Secondary xylem (b) Secondary phloem (c) Protoxylem (d) Cortical cells
Tracheids differ from other tracheary elements in
(a) having casparian strips. (b) being imperforate.
(c) lacking nucleus. (d) being lignified.
Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following:
(1) Closure of stomata (2) Flaccidity of bulliform cells
(3) Shrinkage of air spaces in spongy mesophyll (4) Tyloses in vessel
Which of the statements given below is not trueabout formation of Annual Rings in trees?
(1) Annual ring is a combination of spring wood and autumn wood produced in a year.
(2) Differential activity of cambium causes light and dark bands of tissue – early and late wood respectively
(3) Activity of cambium depends upon variation in climate.
(4) Annual rings are not prominent in trees of temperate region.
In the dicot root the vascular cambium originates from :-
(1) Tissue located below the phloem bundles and a portion of pericycle tissue above protoxylem.
(2) Cortical region.
(3) Parenchyma between endodermis and pericycle.
(4) Intrafascicular and interfascicular tissue in a ring.
Regeneration of damaged growing grass following grazing is largely due to :-
(1) Lateral meristem (2) Apical meristem (3) Intercalary meristem (4) Scondary meristem
Large, empty colourless cells of the adaxial epidermis along the veins of grass leaves are
(1) Lenticels (2) Guard cells (3) Bundle sheath cells (4) Bulliform cells
Which of the following statements about cork cambium is incorrect?
(1) It forms secondary cortex on its outerside (2) It forms a part of periderm
(3) It is responsible for the formation of lenticels (4) It is a couple of layers thick
The transverse section of a plant shows following anatomical features.
a) large number of scattered vascular bundles surrounded by bundle sheath.
b) Large conspicuous parenchynchymatous ground tissue,
c) Vascular bundles conjoint and closed
d) Phloem parenchyma absent.
Identify the category of plant and its part.
1) Dicotyledonous root 2) Monocotyledonous stem
3) Monocotyledonous root 4) Dicotyledonous stem
Identify the incorrect statement
1) Due to deposition of tannins resins, oils etc., heart wood is dark in colour
2) Hart wood does not conduct water but gives mechanical support
3) Sapwood is involved in conduction of water and minerals from root leaf.
4) Sapwood is the innermost secondary xylem and is lighter in colour.
Match List-I with List – II
List-I |
List-II | ||
| (a) | Lenticels | (i) | Phellogen |
| (b) | Cork cambium | (ii) | Suberin deposition |
| (c) | Secondary cortex | (ii) | Exchange of gases |
| (d) | Cork | (iv) | Phelloderm |
Choose the correct answer from the options given below
(a) (b) (c) (d)
(1) (iii) (i) (iv) (ii)
(2) (ii) (iii) (iv) (i)
(3) (iv) (ii) (i) (iii)
(4) (iv) (i) (iii) (ii)
Match list- 1 with list-II
List-I List-II
a) Cells with active cell division capacity i) Vascular tissues
b) Tissue having all cells similar in ii) Meristematic tissue
structure and function
c) Tissue having different types of cells iii) Sclereids
d) Dead cells with highly thickened walls iv) Simple tissue
and narrow lumen
Select the correct answer from the options given below
1) a-iv, b-iii, c-ii, d-i 2) a-i, b-ii, c-iii,d-iv 3) a-iii, b-ii, c-iv, d-i 4) a-ii, b-iv, c-I, d-iii
Select the correct pair
| 1) | In dicto leaves, vascular bundles are surrounded by large thick-walled cells | Conjunctive tissue |
| 2) | Cells of medullary rays that form part of cambial ring | Interfascicular cambium |
| 3) | Loose parenchyma cells rupturing the epidermis and forming a lens – shaped opening in bark | Spongy parenchyma |
| 4) | Large colorless empty cells in the epidermis of grass leaves | Subsidiary cells |
In old trees the greater part of secondary xylem is dark brown and resistant to insect attack due to:
(a) secretion of secondary metabolites and their deposition in the lumen of vessels
(b) deposition of organic compounds like tannins and resins the central layers of stem
(c) deposition of suberin and aromatic substances in the outer layer of stem
(d) deposition of tannins, gum, resin and aromatic substances in the peripheral layers of stem
(e) presence of parenchyma cells, functionally active xylem elements and essential oils
Choose the correct answer from the options given below:
1) (a) and (b) only 2) (c) and (d) only
3) (d) and (e) only 4) (b) and (d) only
Read the following statements about the vascular bundles:
a) In roots, xylem and phloem in a vascular bundle are arranged in an alternate manner along the different radii
b) Conjoint closed vascular bundles do not possess cambium
c) In open vascular bundles, cambium is present in between xylem and phloem
d) The vascular bundles of dicotyledonous stem possess endarch protoxylem
e) In monocotyledonous root, usually there are more than six xylem bundles present
Choose the correct answer from the options given below:
1) a, b and d only 2) b, c, d, and e only
3) a, b, c and d only 4) a, b, c, d and e only
The anatomy of springwood shows some peculiar features. Identify the correct set of statements about springwood.
a) It is also called as the earlywood
b) In spring season cambium produces xylem elements with narrow vessels
c) It is lighter in colour
d) The springwood along with autumn wood shows alternate concentric rings forming annual rings
e) It has lower density
Choose the correct answer from the options given below:
1) a, b, d and e only 2) a, c, d and e only
3) a, b and d only 4) c, d and e only