Question

The denitrifying bacteria are

• A. Micrococcus denitrificans
• B. Pseudomonas
• C. Thiobacillus
• D. All of the above

Answer 1

The correct option is D All of the above

Denitrifying bacteria are microorganisms that convert nitrates in soil into free atmospheric nitrogen. This results in depleting the soil fertility and reducing agricultural productivity, Micrococcus denitrificans, Thiobacillus denitrificans, Paracoccus denitrificans, Pseudomonas aeruginosa are examples of denitrifying bacteria. In absence of denitrification, the earth’s supply of nitrogen will accumulate in the oceans, as nitrates are continuously leached from the soil into nearby bodies of water. Thus the correct answer is option D.