12 MINERAL NUTRITION PRACTICE QUESTIONS
Hydroponics has been successfully employed as a technique for commercial production of
(A) Vegetables such as tomato
(B) Seedless cucumber
(C) lettuce
(D) all of these
12. MINERAL NUTRITION PRACTICE QUESTIONS
Hydroponics was first time demonstrated by
(A) Julius von Sachs, a prominent German botanist in 1860.
(B) Julius von Sachs, a prominent French botanist in 1860.
(C) Melvin Calvin, a prominent French botanist in 1960.
(D) None of these
Hydroponics helps in
(A) identification of essential elements
(B) discovery of deficiency symptoms of essential elements
(C) growing some commercial crops like tomatoes
(D) all of these
Plants growing near nuclear test sites take up
(A) Selenium
(B) Strontium
(C) gold
(D) none of these
Hydroponics are techniques that are able to detect the minerals even at a very low concentration upto
(A) 10–8g/ml
(B) 10–9g/ml
(C) 108g/ml
(D) 10–6g/ml
The criteria for essentiality of an element are:
(A) The element must be absolutely necessary for supporting normal growth and reproduction
(B) The requirement of the element must be specific and not replaceable by another element.
(C) The element must be directly involved in the metabolism of the plant.
(D) all of these
Macronutrients are not
(A) Generally present is plant tissues in large amounts in excess of 10m mole/kg of dry matter.
(B) Carbon, Hydrogen & oxygen are mainly obtained from CO2 and H2O.
(C) Phosphorous, sulphur, potassium, calcium are macronutrient.
(D) Manganese, which is absorbed from soil as mineral nutrition.
How many essential elements are classified into macronutrient and micronutrient.
(A) 9
(B) 17
(C) 8
(D) 10
How many essential elements are called non-mineral elements
(A) 3
(B) 5
(C) 7
(D) 9
Match the column-I & II
Column I Column II
(A) Mo (i) RubisCo
(B) Mg2+ (ii) Alcohol dehydrogenase
(C) Zn2+ (iii) Nitrogenase
(A) A-i, B-ii, C-iii
(B) A-iii, B-i, C-ii
(C) A-ii, B-iii, C-i
(D) A-iii, B-ii, C-i
Mg2+ act as
(A) activator for enzymes phosphoenol pyruvate carboxylase during photosynthetic carbon fixation.
(B) inhibitor for Ribulose bisphosphate carboxylase-oxygenase during photosynthetic carbon fixation.
(C) inhibitor for enzyme phosphoenol pyruvate carboxylase during photosynthetic carbon fixation
(D) b and c both
Which of following does play important roles in opening and closing of stomata
(A) Potassium
(B) Phosphorous
(C) Calcium
(D) magnesium
Which of following is part of chlorophyll and ATP respectively.
(A) Manganese, phosphorous
(B) Magnesium, phosphorous
(C) Manganese, Potassium
(D) Magnesium, Potassium
Which of following is used to categorize essential elements.
(i) components of biomolecules
(ii) Activate or inhibit enzymes.
(iii) Osmotic potential of a cell role.
(iv) Components of energy-related chemical compounds.
(A) i, ii only
(B) iii & iv only
(C) i, iii & iv
(D) all of these
Anion-cation balance in cell maintained by
(A) Potassium
(B) phosphorous
(C) Nitrogen
(D) Sulphur
Which of following involved is protein synthesis
(A) Phosphorous
(B) Potassium
(C) Calcium
(D) Iron
Choose incorrect about function of calcium in plants
(A) It accumulate in newly formed leaf.
(B) Synthesis of cell wall.
(C) formation of spindle fibres
(D) none of these
How many of enlisted elements are/is major constituents of nucleic acids. Potassium, Phosphorous, Calcium, Magnesium, Nitrogen
(A) 2
(B) 3
(C) 4
(D) 1
Plant obtain sulphur in the form of
(A) Sulphide
(B) Sulphate
(C) Sulphite
(D) a & b
Plant obtain iron in the form of
(A) ferrous
(B) ferrate
(C) ferric ions
(D) a & b
Magnesium help in maintaing structure of
(A) cell wall
(B) cell membrane
(C) Ribosome
(D) Lysosome
In how many amino acid does sulphur present.
(A) 0
(B) 1
(C) 2
(D) 5
Main constituent of biotin is
(A) Sulphur
(B) Same as main constitute of thiamine
(C) Retinol
(D) a & b both
Plant obtain calcium is form of
(A) calcium ions
(B) calcium solid
(C) calcium
(D) none
Which of following is present in ferredoxin.
(A) Sulphur
(B) Iron
(C) Both a & b
(D) None
Coenzyme A consist of
(A) Magnesium
(B) Sulphur
(C) Iron
(D) Potassium
Which of following does plant obtain as monovalent ion
(A) Manganese
(B) Zinc
(C) Copper
(D) Chlorine
Which of following does not take part is nitrogen metabolism
(A) Nitrogenase
(B) Nitrate reductase
(C) Molybdenum
(D) nitrate oxygenase
Redox reaction is performed by
(A) Copper
(B) Iron
(C) Both a & b
(D) none of these
Synthesis of auxin need
(A) Zinc
(B) Copper
(C) Iron
(D) Chlorine
The best defined function of manganese is
(A) Splitting of water that liberate oxygen during photosynthesis
(B) Combination of OH– and H+ that leads to formation of water.
(C) aerobic respiration
(D) fermentation
Choose correct set about Boron
(i) It absorbed as B72-
(ii) It absorbed as B4O33-
(iii) It required for uptake & utilization of ZN2+
(iv) Pollen germination
(v) Carbohydrate translocation.
(A) I, ii, iii, iv, v
(B) iii, iv, v
(C) iv, v
(D) none of these
Boron is required for uptake & ultilization of
A) Ca2+ (B) Mn2+ (C) Mg2+ (D) all of these
Whenever the supply of an essential elements becomes limited, plant growth is
(A) accelerated (B) retarded (C) no effect (D) optimum
Critical concentration is
(A) The concentration of the essential element below which plant growth is retarded.
(B) the concentration of the non-essential element below which plant growth is accelerated.
(C) The concentration of the essential element above which plant growth is accelerated.
(D) The concentration of the essential element below which plant growth is accelerated.
Deficiency symptoms is
(A) Morphological changes that indicate certain element deficiencies
(B) It is not varying from element to element
(C) Never disappear when the deficient mineral nutrient is provided to plant.
(D) all of these
For elements that are actively mobilized within the plants, and exported to young developing tissues, the deficiency symptoms tend to appear
(A) first in meristematic tissue
(B) first in older tissue
(C) first in leaf
(D) all of these
Which of following element deficiencies are visible in senescent leaves
(A) Nitrogen
(B) Potassium
(C) Magnesium
(D) all of these
Chlorosis is
(A) loss of chlorophyll leading to yellowing of leaves
(B) caused by deficiency of elements like N, K, Mg, S, Mn, Fe, Zn, MO and Cu.
(C) A & B both
(D) none of these
Deficiency of Ca, Mg, Cu, K lead to
(A) Chlorosis
(B) Necrosis
(C) inhibition of cell division
(D) no of these
Inhibition of cell division is not related to deficiency of
(A) S
(B) Cu
(C) K
(D) Mo
Given below are list of element N, K, Mg, Ca, Cu, B, Fe, Mn, Zn, Mo, How many of them are related to necrosis, chlorosis and inhibition of cell division respectively.
(A) 8, 4, 4
(B) 4, 8, 4
(C) 4, 4, 8
(D) none of these
The requirement of micronutrients is always in …….concentration their moderate decrease cause the …… and a moderate increase cause ……
(A) high, deficiency symptoms, toxicity
(B) low, deficiency symptoms, toxicity
(C) low, toxicity symptoms, deficiency symptoms
(D) high toxicity, symptoms, deficiency symptoms
Any mineral ion concentration is tissues that reduced the dry weight of tissues by about how much present is considered toxic.
(A) 10%
(B) 20%
(C) 2%
(D) more than 50%
Choose correct statements
(i) The prominent symptom of manganese toxicity is appearance of brown spots surrounded by chlorotic venis.
(ii) Manganese compete with magnesium for binding with enzymes.
(iii) Manganese inhibit calcium translocation in Root apex
(iv) Excess of manganese may in fact induce deficiencies of iron, magnesium & calcium
(A) i, ii, iii, iv
(B) i, ii, iv only
(C) i, iii only
(D) iv only
Choose the correct about mechanism of absorption of elements by palnts.
(A) An initial rapid uptake of ions into the ‘outer space’ of cells i.e. apoplast is passive.
(B) The passive movement of ions into the apoplast usually occurs through ionchannels, the trans-membrane protein.
(C) The entry or exist of ions to and from the symplast is an active process.
(D) all of these
Mineral salts are transported through
(A) Xylem
(B) Phloem
(C) Pericycle
(D) a & b
Soil supplies
(A) Mineral salt
(B) Nitrogen-fixing bacteria
(C) hold water
(D) all of these
which of following may be supplied by fertilizers
(A) Macronutrients
(B) Micronutrient
(C) both A & B
(D) none
Nitrogen is a constituent of
(A) hormones
(B) Chlorophyll
(C) Proteins
(D) All of these
How many from following statement are correct.
(i) Plants compete with microbes for limited nitrogen that is available in soil.
(ii) Nitrogen is limiting nutrient for agricultural ecosystem
(iii) Nitrogen is not limiting nutrient for natural ecosystem.
(iv) Nitrogen is absorbed mainly as NO2-
(v) Nitrogen is example of macronutrient of plant as manganese because these present is plant tissue in large amounts (in excess of 10 mmole kg-1 of dry matter)
(A) 4
(B) 2
(C) 3
(D) 5
Two nitrogen atoms joined by
(A) Three ionic bond
(B) three covalent bond
(C) three coordination
(D) a & b both
Nitrogen fixation is conversion of (N2) into
(A) NO2
(B) N2O
(C) NH3
(D) A and C both
Oxidation of ammonia into nitrite is carried out by
(A) Nitrosomonas
(B) Nitrobacter
(C) Pseudomonas
(D) Thiobacillus
Nitrococcus is responsible for
(A) Oxidation of ammonia
(B)Oxidation of nitrite
(C) Reduction of nitrate
(D) formation of NO3-
Nitrification is related to
(A) 2NH3+3O22NO2-+2H++2H2O
(B) 2NO2-+O22NO3–
(C) Photoautotrophic bacteria
(D) A & B both
Plant absorb
(A) nitrate
(B) nitrite
(C) Ammonia
(D) All of these
Formation of amine group of amino acid in leaf is achieved by
(A) oxidation of nitrite
(B) reduction of nitrite
(C) oxidation of nitrate
(D) reduction of nitrate
Denitrification is process of
(A) Reduction of nitrate
(B) Reduction of nitrite only
(C) Oxidation of nitrite only
(D) oxidation of nitrate only
Denitrifying bacteria are
(A) Thiobacillus & Nitrosomonas
(B) Nitrococcus & Nitrosomonas
(C) Pseudomonas & Thiobacillus
(D) None of these
Pseudomonas is responsible for
(A) Ammonification
(B) Nitrification
(C) Denitrification
(D) All of these
Identify A, B, C, D, E
A |
B |
C |
D |
E |
|
| A | Ammonifi
cation |
NO2- | Denitrif
ication |
NO3- | NH3 |
| B | Ammonifi
cation |
NH3 | Denitrif
ication |
NO2- | NO3- |
| C | Denitrific
ation |
NO3- | Ammon
ification |
NH3 | NO2- |
| D | Denitrific
ation |
NH3 | Ammon
ification |
NO3- | NO2- |
Nitrogenase enzymes found exclusively is
(A) prokaryotes
(B) eukaryotes
(C) both a & b
(D) aquatic
Choose correct option.
(A) Azotobacter is free-living N2-fixing aerobic microbe.
(B) Beijerinckia is free-living N2-fixing anaerobic microbe.
(C) Rhodospirillum is aerobic and freeliving N2-fixes
(D) Azotobacter is free-living N2-fixing anerobic microbe.
Frankia is associated with …… to form root nodule.
(A) leguminious plants root
(B) Root of non-legumes (Alnus)
(C) A & B both
(D) none of these
Rhizobium is
(A) Rod-shaped
(B) Coccos shaped
(C) Spirillum shaped
(D) comma-shaped
Rhizobium is
(A) Rod-shaped
(B) symbiotic
(C) associated with alfalfa
(D) all
Arrange the sequence of nodule formation by Rhizobium and root of host plant.
(A) I→III→V→II
(B) I→III→II→V
(C) II→III→V→I
(D) II→V→III→I
Which of following is incorrect about root nodule formation
(A) Rhizobia multiply & colonise the surrounding of roots & get attached to cortical cells.
(B) Root nodule formation initiate in cortex of root.
(C) The bacteria are released from the infection thread in to the cells which leads to the differentiation of specialized N2-fixing cells.
(D) Nodules establishes a direct vascular connection with host for exchange of nutrients.
The enzyme nitrogenase
(i) Mo-Fe protein
(ii) Catalyses the conversion of atmospheric nitrogen to ammonia
(iii) highly sensitive to molecular oxygen
(iv) require anaerobic condition
(A) i, ii, iii, iv are correct
(B) i, iii & iv are only correct
(C) ii, iii are incorrect
(D) I, ii are only correct.
Leg-haemoglobin is not
(A) leguminous haemoglobin
(B) oxygen producer
(C) oxygen scavengers
(D) Make red-pink color appearance of root nodule
Production of one molecule of ammonia require
(A) 16 ATP
(B) 8 ATP
(C) 8e–
(D) a & c both
How many electron required to convert (N2) into 2NH3
(A) 4e–
(B) 8e–
(C) 16e–
(D) 2e–
The energy require for N2 fixing comes from
(A) Nitrogenase activity of microbes
(B) Respiration of host cell
(C) Carbon assimilation of host cell
(D) All of these
Reductive amination require
(i) Ammonium ion
(ii) NADP
(iii) Glutamate dehydrogenase
(iv) Water
(v) α-ketoglutaric acid
(A) i, ii, iii, v only
(B) i, iii, v only
(C) ii & iv only
(D) all of these
Transamination is
(A) Transfer of amino group from one amino acid to keto group of a keto acid.
(B) Transfer of keto group from one amino acid to amino group of a keto acid
(C) Transfer of kept group from keto acid to amino group of an amino acid.
(D) Transfer of amino group from keto acid to keto group of an amino acid.
Which of following is Amino donor.
Asparagine & glutamine are
(A) two amide
(B) formed from two amino acid i.e. aspartic acid and glutamate respectively
(C) contain less nitrogen than amino acid.
(D) transported by phloem
Ureides have
(A) high carbon to nitrogen ratio
(B) high nitrogen carbon ratio
(C) N/C = 1
(D) none of them
In which of the following forms is iron absorbed by plants?
(a) Ferric
(b) Ferrous
(c) Both ferric and ferrous
(d) Free element
Which of the following elements is responsible for maintaining turgor in cells?
(a) Magnesium
(b) Sodium
(c) Calcium
(d) Potassium
In which of the following, all three are macronutrients?
(a) Boron, zinc, manganese
(b) Iron, copper, molybdenum
(c) Molybdenum, magnesium, manganese
(d) Nitrogen, calcium, phosphorus
Minerals known to be required in large amounts for plant growth include :
(a) Calcium, magnesium, manganese, copper
(b) Potassium, phosphorus, selenium, boron
(c) Magnesium, sulphur, iron, zinc
(d) Phosphorus, potassium, sulphur, calcium
Deficiency symptoms of nitrogen and potassium are visible first in:
(a) Senescent leaves
(b) Young leaves
(c) Roots
(d) Buds
Thiobacillus is a group of bacteria helpful in carrying out
(1) Nitrogen fixation
(2) Chemoautotrophic fixation
(3) Nitrification
(4) Denitrification
In Glycine max, the product of biological nitrogen fixation is transported from the root nodules to other parts as :
(1) Ammonia
(2) Glutamate
(3) Nitrates
(4) Ureides
Which of the following elements helps in maintaining the structure of ribosomes?
(1) Magnesium (2) Zinc (3) Copper (4) Molybdenum
Match the following concerning essential elements and their functions in plants:
(a)Iron (i) Photolysis of water
(b)Zinc (ii) Pollen germination
(c)Boron (iii) Required for chlorophyll biosynthesis
(d)Manganese (iv) IAA biosynthesis
Select the correct option:
(a) (b) (c) (d)
1) (iv) (i) (ii) (iii)
2) (ii) (i) (iv) (iii)
3) (iv) (iii) (ii) (i)
4) (iii) (iv) (ii) (i)
The product(s) of reaction catalyzed by nitrogenase in root nodules of leguminous plants is/are
1) Ammonia and hydrogen
2) Ammonia alone
3) Nitrate alone
4) Ammonia and oxygen
Match List – I with List – II
List – I |
List – II |
||
| a) | Nitrococcus | i) | Denitrification |
| b) | Rhizobium | ii) | Conversion of ammonia to nitrite |
| c) | Thiobacillus | iii) | Conversion of nitrite to nitrate |
| d) | Nitrobacter | iv) | Conversion of atmospheric nitrogen to ammonia |
a b c d
1) i ii iii iv
2) iii i iv ii
3) iv iii ii i
4) ii iv i iii
Match List-I with List-II
List – I List – II
a) Manganese i) Activates the enzyme catalase
b) Magnesium ii) Required for pollen germination
c) Boron iii) Activates enzymes of respiration
d) Iron iv) Functions in splitting of water during photosynthesis
Choose the correct answer from the potions given below:
1) (a) – (iii), (b) – (iv), (c) – (i), (d) – (ii)
2) (a) – (iv), (b) – (iii), (c) – (ii), (d) – (i)
3) (a) – (iv), (b) – (i), (c) – (ii), (d) – (iii)
4) (a) – (iii), (b) – (i), (c) – (ii), (d) – (iv)
Which one of the following produces nitrogen fixing nodules on the roots of Alnus?
1) Rhizobium 2) Frankia 3) Rhodospirillum 4) Beijernickia
CHAPTER NOTES