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Question

Which micronutrient activates enzyme urease involved in nitrogen metabolism?

A
Boron
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B
Molybdenum
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C
Zinc
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D
Nickel
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Solution

The correct option is D Nickel
Nickel is a micronutrient and absorbed from the soil as divalent cation from the soil. It is mainly required in roots and leaves in the plant. It is an important component of two enzymes, urease and hydrogenase. Also, it is involved in the metabolism of urea.
So the correct answer is 'Nickel'.

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