If the radiations inactivate all the nitrogenase enzymes, then which of the following doesn't happen?

Conversion of nitrate to nitrite

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Fixation of atmospheric nitrogen

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Fixation of nitrogen in legumes

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Conversion of ammonium to nitrate

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Solution

The correct option is C Fixation of nitrogen in legumes
The enzyme nitrogenase is required for the process of biological nitrogen fixation only. Fixation of atmospheric nitrogen can occur through other routes also of nitrogen cycle while neither nitrification (conversion of ammonium to nitrate) nor conversion of nitrate to nitrite requires nitrogenase. So, if radiations inactivate all nitrogenase enzyme then there will be no nitrogen fixation in legumes.
So, correct answer is 'Fixation of nitrogen in legumes'.

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Similar questions

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

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

Study the diagram given below and then answer the questions that follow :

(a) Briefly describe how nitrogen of the atmosphere is converted to nitrates by leguminous plants.

(b) Name the bacteria that converts (i) ammonium compounds to nitrites (ii) nitrites to nitrates.

(d) Role of plants and animal in the formation of ammonium compounds.

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