A) nitrogen-fixation
B) protecting nitrogenase from \[{{O}_{2}}\]
C) destroy bacteria
D) transport of food in plants
Correct Answer: B
Solution :
Leghaemoglobin is a pinkish pigment precent inside the root nodules of nitrogen-fixing giants like legumes. It is an oxygen scavanger and related to blood pigment haemoglobin. It protects nitrogen-fixing enzyme, nitrogenase from oxygen.
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