Question

The first stable product of fixation of atmospheric nitrogen in leguminous plants is

(a) $NO_3^-$

(b) glutamate

(c) $NO_2^-$

(d) ammonia.

Answer 1

Ans : (d) Ammonia

Explanation:

Ammonia is first stable compound produced in fixation of atmospheric nitrogen. It requires 16 ATP, a source of electron donor ferredoxin, hydrogen donor NADPH or FMNH2 and dinitrogenase enzyme.