Direction for: In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements mark the correct answer as
Assertion: Nitrogen fixing enzyme in legume root nodules functions at low oxygen concentration. Reason: Low oxygen concentration is provided by leghaemoglobin.A) If both Assertion and Reason are true and Reason is the correct explanation of the Assertion.
B) If both Assertion and Reason are true but the Reason is not the correct explanations of Assertion.
C) If Assertion is true, but Reason is false.
D) If both Assertion and Reason are false.
Correct Answer: A
Solution :
Nitrogen fixing enzyme (nitrogenase) functions under anaerobic conditions. Leghaemoglobin combines with oxygen and protects nitrogenase.
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