Assertion : Nitrogen-fixing enzyme in legume | vedclass

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(A) The enzyme nitrogenase,which is responsible for nitrogen fixation in legume root nodules,is highly sensitive to molecular oxygen $(O_2)$.To functi

Vedclass · Accepted Answer

If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

Vedclass · Answer

(A) The enzyme nitrogenase,which is responsible for nitrogen fixation in legume root nodules,is highly sensitive to molecular oxygen $(O_2)$.To function effectively,it requires an anaerobic environment.Leghaemoglobin acts as an oxygen scavenger,binding to oxygen and maintaining a low oxygen concentration within the nodules.Therefore,both the Assertion and the Reason are correct,and the Reason correctly explains why the enzyme functions at a low oxygen concentration.

Assertion : Nitrogen-fixing enzyme in legume root nodules functions at low oxygen concentration.
Reason : Low oxygen concentration is provided by leghaemoglobin.

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Assertion : Nitrogen-fixing enzyme in legume root nodules functions at low oxygen concentration.Reason : Low oxygen concentration is provided by leghaemoglobin.