Question

Conversion of ammonia into nitrite and nitrate is

• A. Ammonification
• B. Denitrification
• C. Nitrification
• D. All of the above

Answer 1

The correct option is C Nitrification

Ammonifying bacteria are those bacteria that convert atmospheric nitrogen into ammonia. These are also called as nitrogen fixing bacteria. For example, Rhizobium, Azotobacter.

Nitrifying bacteria are those bacteria that convert ammonia to nitrite and nitrite to nitrate. The process is called as nitrification.

Examples of nitrifying bacteria includes Nitrosomonas, Nitrosococcus, Nitrobacter.

Denitrifying bacteria are those bacteria that convert nitrates into nitrites and nitrites into free nitrogen. For example, Thiobacillus denitrificans, Micrococcus.

Thus, the correct answer is 'Nitrification.'