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Neet Botany Mineral Nutrition Mcq
Quiz 10
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Q.1
Amides are formed by:
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a) Hydroxyl part of amino acids replaced by NH2 group.
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b) Hydroxyl part of amino acid replaced by oxygen radicle.
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c) NH2 part of amino acid replaced by OH group.
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d) NH2 part of amino acid replaced by CH3 group.
Explanation
Answer:(a)
Q.2
The enzyme nitrogenase is highly sensitive to the molecular oxygen. It requires anaerobic conditions, to protect this enzyme nodule contains:
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a) Leg haemoglobin.
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b) Myoglobin.
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c) Haemoglobin.
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d) Rhizobium bacteria.
Explanation
Answer:(a)
Q.3
A plant shows appearance of brown spots surrounded by chlorotic veins. This indicates:
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a) Deficiency of Manganese.
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b) Toxicity of manganese.
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c) Toxicity of magnesium.
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d) Toxicity of molybdenum.
Explanation
Answer:(b)
Q.4
Match the following:
a. nif, nod, fix genes
Leg haemoglobin
b. Infection thread
Polysaccharide membrane bound bacteria
c. Peribacteriodal membrane
Plasmid
d. Bacterioids
Root hairs
e. Root nodules
Knob like structures in roots of legumes
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a) a → 3; b → 5; c → 2; d → 1; e → 4
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b) a → 3; b → 1; c → 4; d → 2; e → 5
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c) a → 3; b → 5; c → 1; d → 2; e → 4
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d) a → 3; b → 4; c → 1; d → 2; e → 5
Explanation
Answer:(d)
Q.5
Assertion: Nitrogen is the mineral element required by plant in greatest amount. Reason: Molybdenum is a micronutrient element required by plant in greatest amount.
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a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
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b) Both Assertion and Reason are true but Reason is NOT the correct explanation of Assertion.
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c) Assertion is true but Reason is false.
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d) Both Assertion and Reason are false.
Explanation
Answer:(b)
Q.6
Which mineral elements are called critical elements for crops?
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a) N, P, K.
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b) C, H, O.
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c) N, S, Mg.
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d) K, Ca, Fe.
Explanation
Answer:(a)
Q.7
Function of zinc is:
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a) Biosynthesis of IAA.
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b) Synthesis of chlorophyll.
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c) Activate carboxylase enzyme.
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d) Both A and C.
Explanation
Answer:(d)
Q.8
Which method of hydroponics is used for providing nutrients to plants or seedlings in environ ment saturated with fine droplets of nutrients ?
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a) Aeroponics
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b) Continous flow of cultured solution
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c) Static cultured solution
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d) Suspension culture
Explanation
Answer:(a)
Q.9
Which elements play significant role in structure and synthesis of chlorophyll ?
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a) Fe, Ca
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b) Fe, Mg
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c) Cu, Fe
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d) Mg, Fe
Explanation
Answer:(d)
Q.10
State deficiency of Cl.
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a) Wilting of stubby roots
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b) brown spoted fruits
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c) accumalation of purple pigment
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d) premature leaf fall
Explanation
Answer:(a)
Q.11
State importance of Ca.
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a) Structural component of plasma membrance
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b) For the synthesis if IAA.
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c) Formation of bipolar centriole during cell-division
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d) Formation of nuclear membrance
Explanation
Answer:(c)
Q.12
Which substances of soil water are degraded gradually by, atmosphere and microorganisms ?
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a) Organic material
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b) inorganic material
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c) elements
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d) positive ions
Explanation
Answer:(a)
Q.13
In the following statements which option is correct for toxicity levels of elements. Statements : (A) Toxicity levels for any elements may inhibit the uptake of another element. (B) Low concentration of Mn may cause deficiencies of Mg and Ca. (C) A moderate increase toxicity are difficult to identify.
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a) A
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b) A and C
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c) B and C
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d) all
Explanation
Answer:(a)
Q.14
Which is improper pair of the following ?
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a) Ionic balance in plants - Na
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b) Cell wall component - B
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c) Activation of Nitrogenase - Cu
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d) Required for iron absorption - Ni
Explanation
Answer:(c)
Q.15
Rhizobium has symbiotic association with the roots of:
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a) Garden pea.
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b) Alfalfa.
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c) Sweet clover.
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d) All of these.
Explanation
Answer:(d)
Q.16
The main amino acid from which the transfer of NH2 group takes place and other amino acids are formed through Transamination is:
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a) Glutamic acid.
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b) Aspartic acid.
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c) Malic acid.
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d) Glycine
Explanation
Answer:(a)
Q.17
The given equation refers to: N2 + 8e- + 8H+ + 16ATP → 2NH3 + H2 + 16ADP + 16Pi
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a) Ammonification.
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b) Nitrification.
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c) Nitrogen fixation.
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d) Denitrification.
Explanation
Answer:(c)
Q.18
Which of the following amide is involved in the assimilation by plants?
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a) Glutamine.
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b) Alanine.
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c) Asparagine.
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d) Serine.
Explanation
Answer:(c)
Q.19
The movement of ions into the Apoplast usually occurs through:
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a) Trans membrane proteins.
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b) Expenditure of energy.
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c) Endosome formation.
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d) Lysis of membranes.
Explanation
Answer:(a)
Q.20
Which of the following is a group of micronutrients for plants?
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a) Fe, Mn, Cu, Mo, Zn.
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b) Fe, Mn, Cu, O, C.
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c) Cu, B, Cl, Fe, Ca.
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d) Ca, Mg, Fe.
Explanation
Answer:(a)
Q.21
Due to which type of bacteria atmospheric N2 is maintained ?
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a) Nitrosomonas
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b) Rhizobium
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c) Nitrobacter
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d) Pseudomonas
Explanation
Answer:(d)
Q.22
Out of the following, what is the function of Potasium ?
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a) ion balance
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b) stabilizes ribosomes
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c) Required for iron absorption
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d) In active site of many redox enzymes
Explanation
Answer:(a)
Q.23
State importance of iron ?
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a) Required for activation of Carboxyalase enzyme.
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b) Required for the structure of Ferodoxin.
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c) Required for the photolysis of H2O during photosynthesis.
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d) Required for the absorption and metabolism of Ca.
Explanation
Answer:(b)
Q.24
In the first phase of absorption of mineral ions from soil to root, element passes through which plant ?
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a) Cell wall
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b) Nuclear membrance
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c) tonoplast
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d) plasma membrance
Explanation
Answer:(a)
Q.25
Match proper pair
Column I
Column II
1 Silt particle
a. large
2 Sand particle
b. Colloids
3 Clay particle
c. medium
very small clay particle
d. small
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a) 1 - a, 2 - d, 3 - c, 4 - b
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b) 1 - b, 2 - c, 3 - a, 4 - d
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c) 1 - c, 2 - b, 3 - d, 4 - a
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d) 1 - c, 2 - a, 3 - d, 4 - b
Explanation
Answer:(d)
Q.26
Which amino acid acts as a main donor of amino group in transamination ?
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a) Glutamic acid
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b) Glutamine
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c) Glutamate dehydrogenase
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d) Glycine
Explanation
Answer:(a)
Q.27
Which is correct for absorption of mineral ions, from the given statement ? select proper option. (i) Elements absorbed by root cells first enters region between cell wall and plasma membrance. (ii) It also enters in the inter cellular space of root cells. (iii) This process occurs rapidly through transportation and requires energy obtained from ATP. (iv) Later on mineral ions enters inside plasma membrance and vacuolar sap.
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a) i, ii and iii
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b) i and ii
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c) iii and iv
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d) i, ii and iv
Explanation
Answer:(d)
Q.28
Hydroponics is:
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a) Cultivation of plants in water.
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b) Growth of plants towards water.
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c) Growth of plants away from water.
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d) Soilless cultivation of plants.
Explanation
Answer:(d)
Q.29
Pick out the correct statements for the given diagram of N2 fixation and choose the correct option: (i) Nitrogenase catalyses the reaction. (ii) The formation of ammonia is a reductive process. (iii) One molecule of nitrogen produces two molecules of ammonia. (iv) Nitrate reductase catalyses the reaction. (v) Formation of ammonia is an oxidative reductive process. (vi) One molecule of nitrogen produces one molecule of ammonia.
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a) (i), (ii) and (iii) are correct.
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b) (iv), (v) and (vi) are correct.
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c) (i), (v) and (vi) are correct.
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d) (iii), (iv) and (v) are correct.
Explanation
Answer:(a)
Q.30
Translocation of organic substances through the phloem is facilitated by the micronutrient:
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a) Calcium.
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b) Boron.
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c) Both A and B.
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d) Sulphur.
Explanation
Answer:(b)
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