NEET 2011 Biology question

Not in NEET syllabus

The function of leghaemoglobin in the root nodules of legumes is :

(1)inhibition of nitrogenase activity
(2)oxygen removalCorrect
(3)nodule differentiation
(4)expression of nif gene

Answer: (2)

Solution

The enzyme nitrogenase of Rhizobium is highly sensitive to oxygen. The nodule contains leghaemoglobin, a pink pigment that acts as an oxygen scavenger (binds free O2), protecting

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Question ID VK-090892