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Assertion : Nitogen - fixing bacteria in legume root nodules survive in oxygen - depleted cells of nodules. Reason : Leghaemoglobin completely removes oxygen from the nodule cells.A. Both A and R are true and R is the correct explanation of AB. Both A and R are true, but R is not the correct explanation of AC. A is true, but R is falseD. A and R are false

Answer» Correct Answer - B
Enzyme nitrogenase is sensitive to `O_(2)` and therefore, it is found in oxygen depleted cells. In the cells of root nodules leghaemogiobin is present and pigment is an oxygen scavenger.
Hence, it provides anaerobic condition to nitrogen fixing bacteria.


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