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Pigment leghaemoglobin acts as
Question

Pigment leghaemoglobin acts as

A.

Nitrogen carrier

B.

Oxygen carrier

C.

Nitrogenase activation

D.

Rhizobium carrier

E.

Answer not known

Correct option is B

Leghaemoglobin is present in legume root nodules. It regulates oxygen concentration within nodules. It supplies oxygen for respiration without inhibiting nitrogenase.
This creates a favourable environment for nitrogen fixation. Thus, it functions mainly as an oxygen carrier. Therefore, option (b) is correct.

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