The Function of Leghemoglobin in Root Nodules is To

Question

The function of leghemoglobin in root nodules is to
A) bind oxygen.
B) chelate iron.
C) produce iron.
D) produce nitrogen.

Accepted Answer

Leghemoglobin, which is present in root nodules of leguminous plants, binds oxygen and provides a low oxygen environment for the nitrogen-fixing bacteria. This is essential for the nitrogenase enzyme to work properly and reduce atmospheric nitrogen to ammonia. Option B and C are incorrect as leghemoglobin does not chelate or produce iron. Option D is incorrect as leghemoglobin is not involved in the production of nitrogen; this is the role of the nitrogen-fixing bacteria.