Q101. Choose the incorrect match w.r.t. activator element
(1) Fe - Catalase
(2) Mo - Nitrogenase
(3) Zn²+ - Nitrogenase
(4) Mg²+ - RUBP carboxylase
Ans.3
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Q102. Along with the transpiration stream nodules of soyabean can export fixed nitrogen as
(1) Nitrites
(2) Ammonia
(3) Nitrates
(4) Ureides
Ans.4
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Q103. The symptom related with potassium deficiency is/are
(1) Inhibition of cell division
(2) Scorched leaf tips
(3) Necrosis
(4) More than one option is correct
Ans.4
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Q104. The elements responsible for splitting of water to liberate oxygen during photosynthesis and maintaining ribosome structure are (respectively)
(1) Mn, Mg
(2) Mg, Mn
(3) Mg, Fe
(4) Ca, Mn
Ans.1
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Q105. Which of the following is not the criteria for essentiality of a mineral element?
(1) Element must be absolutely necessary for supporting normal growth and reproduction
(2) The requirement of element must be specific and not replaceable by another element
(3) The element must be indirectly involved in metabolism of the plant
(4) In the absence of the element the plants do not complete their life cycle or set the seeds
Ans.3
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Q106. From the given statements choose the correct one.
(1) Sulphur is the main constituent of biotin. thymine and ferredoxin
(2) Toxicity symptoms of mineral ions are easy to Identify
(3) The initial rapid uptake of ions into the free space or outer space of cells is symplastic and active
(4) The technique of growing plants in a nutrient solution is known as hydroponics
Ans.4
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Q107. For its activity, phosphoenolpyruvate carboxylase requires
(1) Magnesium
(2) Zinc
(3) Iron
(4) Copper
Ans.1
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Q108. Mark the correct option w.rt. Boron
(1) Helps in uptake and utilisation of Ca²+ ions
(2) Causes degeneration of pollen grains
(3) Inhibits translocation of sugars
(4) Needed in the synthesis of auxin
Ans.1
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Q109. Deficiency of which one of the following group of minerals causes delay in flowering and inhibition of cell division?
(1) N, K, Si (2) N, K, Co
(3) N, S, Mo (4) Na, S, K
Ans.3
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Q110. The frequently remobilized nutrient from senescent parts, are
(1) Calcium and Nitrogen
(2) Magnesium and Potassium
(3) Calcium and Magnesium
(4) Boron and Nitrogen
Ans.2
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