Q111. Minerals known to be required in large amounts for plant growth include
(1) Calcium, magnesium, manganese, copper
(2) Potassium, phosphorus, selenium, boron
(3) Magnesium, sulphur, iron, zinc
(4) Phosphorus, potassium, sulphur, calcium
Ans.4
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Q112. Match the following.
Column I Column ll
a. Boron (i) Constituent
of chlorophyll
b. Chlorine (ii) Carbohydrate
translocation c. Manganese (iii) Anion-cation
balance
d. Magnesium (iv) Nitrogen
metabolism
(1) a(ii), b(iii), c(iv), d(i)
(2) a(ii), b(iv), c(i), d(iii)
(3) a(iv), b(ii), c(iii), d(i)
(4) a(iv), b(ii), c(i), d(iii)
Ans.1
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Q113. Select the incorrect match.
(1) Azolla - Anabaena
(2) Alfalfa - Rhizobium
(3) Sesbania - Nostoc
(4) Alnus - Frankia
Ans.3
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Q114. How many ATP molecules are required to form one molecule of NH3 during nitrogen fixation?
(1) 16 (2) 2
(3) 6 (4) 8
Ans.4
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Q115. Growing plants in a nutrient solution
(1) Involves use of chelating agent Na-EDTA to keep iron unavailable to plants
(2) Was first demonstrated by Amon and Hoagland
(3) Also allows growth of algae in containers
(4) Requires prevention of reaction of light with roots
Ans.4
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Q116. Which is not a criteria for essentiality of a mineral?
(1) Direct role in metabolism
(2) Requirement is specific
(3) Deficiency causes hunger signs
(4) Dispensible for growth
Ans.4
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Q117. Which is not a true statement regarding macronutrients?
(1) Forms plant structure
(2) Usually become toxic in excess
(3) No role in electron transfer
(4) Develop osmotic potential
Ans.2
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Q118. Choose correct statement regarding micronutrients
(1) Become toxic in excess
(2) Little role in protoplasmic structure
(3) No role in enzyme activation
(4) Both (1) & (2)
Ans.4
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Q119. Deficiency of which element causes deficiency of nitrogen
(1) Mo (2) K
(3) S (4) Mn
Ans.1
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Q120. Minerals associated with redox reactions are
(1) N, Cu (2) Fe, Cu
(3) Mn, Mo (4) Fe, K
Ans.2
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