Question

Nitrogen fixing bacteria use oxygen for nitrogen fixation.

• A. True
• B. False

Answer 1

The correct option is B

False

Oxygen is harmful for Nitrogen fixing bacteria (anaerobic bacteria) .Enzymes responsible for nitrogenase action are very susceptible to destruction by oxygen. For this reason, many bacteria cease production of the enzyme in the presence of oxygen.Therefore Nitrogen fixation cannot take place in the presence of oxygen.