Question

77. The enzyme nitrogenase is involved in:
(1) reduction of nitrate to ammonia in plants
12) reduction of atmospheric nitrogen to ammonia in plants
(3) regulation of urea cycle in plants
(4) breaking down of nitrogenous compounds in plants
​

Answer 1

Option 2. Reduction of atmospheric nitrogen into Ammonia in plants. And this nitrogenase enzyme was produced by Cyanobacteria.

Answer 2

reduction of atmospheric nitrogen to ammonia in plants