During biological nitrogen fixation, inactivation of nitrogenase by oxygen poisoning is prevented by

Options

A. Xanthophyll
B. Carotene
C. Cytochrome
D. Leghaemoglobin

Answer

D

Explanation

Leghaemoglobin is a nitrogen or oxygen carrier and haemoprotein found in the nitrogen fixing root nodules of leguminous plants. Leghaemoglobin buffers the concentration of free oxygen in the cytoplasm of plant cells to ensure functions of root nodules.