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Question

'X' is an essential micronutrient required in leaves and roots. The major function of 'X' is to perform the metabolism of urea and ureids and its deficiency causes leaf tip necrosis. X is:

A
Sulphur
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B
Magnesium
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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. It is absorbed by the plant from the soil as a divalent ion. It is a component of two enzymes, urease and hydrogenase. It is involved in the metabolism of urea. Its deficiency cause chlorosis, necrosis and stunted plant growth.
So the correct answer is 'NIckel'.

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