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Question

If by radiation, all nitrogenase enzymes are inactivated, then there will be no

A
Fixation of nitrogen in legumes
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B
Conversion from ammonia to nitrate in soil
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C
Conversion from nitrate to nitrite in legumes
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D
None of the above
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Solution

The correct option is A Fixation of nitrogen in legumes
Atmospheric nitrogen is diatomic nitrogen. It is not useful for plants. Conversion of atmospheric nitrogen into plant usable form like nitrate, nitrite and ammonium ions is called nitrogen fixation. Nitrogenase enzyme carry out nitrogen fixation by converting free nitrogen into ammonia.

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