Which one of the following micronutrients is required by plants in least quantity?
A
Mo
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B
B
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C
Zn
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D
Mn
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Solution
The correct option is D Mo The essential mineral nutrients required by plants in lesser quantity are called as micronutrients.
Molybdenum is the micronutrient required in least quantity. Molybdenum acts as an activator of certain enzymes, involved in nitrogen metabolism, including nitrate reduction and nitrogen fixation, ascorbic acid synthesis and some redox reactions.