Leghaemoglobin helps in : (A) transport of food in plants (B) nitrogen fixation (C) protecting nitrogenase from O 2 (D) nodule formation.
Option C.Leghemoglobin buffers the concentration of free oxygen in the cytoplasm of infected plant cells to ensure the proper function of root nodules. Leghemoglobin is a nitrogen or oxygen carrier; naturally occurring oxygen and nitrogen interact similarly with this protein.
