Certain bacteria living in the soil poor in oxygen convert nitrates into nitrites and then to free nitrogen and such bacteria are termed as

Options

A. Nitrogen fixing bacteria
B. Denitrifying bacteria
C. Ammonifying bacteria
D. Saprophytic bacteria

Answer

B

Explanation

The loss or removal of nitrogen or nitrogen compounds specially reduction of nitrates or nitrites commonly by bacteria in soil that usually results in the escape of nitrogen into the air are called denitrifying bacteria and process called denitrification. Pseudomonas, Thiobacillus, Micrococcus are example of denitrifiers.