Question

In nitrogen cycle, atmospheric nitrogen is fixed by bacteria and converted into ammonia. Ammonia is further converted into other forms of nitrogen. At the end of the cycle it returns to the atmosphere by the process of

• A. Ammonification.
• B. Nitrification.
• C. Denitrification.
• D. Assimilation.

Answer 1

The correct option is C Denitrification.

The nitrogen cycle is the recycling phase of the nitrogen which includes nitrogen fixation, ammonification, nitrification, and denitrification. Denitrification is the process through which the nitrates and nitrites are converted back to atmospheric nitrogen. This process is performed by the anaerobic bacteria.

Thus, the correct answer is option C.