the enzyme responsible for the reduction of molecular nitrogen to the level of ammonia in the leguminous root nodules is

1. nitrate reductase
2. nitrite oxydase
3. nitrogenase
4. nitrate oxydase

Hello Student
Correct answer is 3. Nitrogenase
A pigment leghaemoglobin is present in the root nodules, which is a oxygen scavenger, i,e., it protects the enzyme nitrogenase from oxygen. Nitrogenase enzyme complex consists of two components, i,e,. th eFeProtein and Mo – Fe Protein.