Question

Denitrifying bacteria convert ______.

विकल्प

• nitrites to nitrates

• nitrates to molecular nitrogen

• molecular nitrogen to nitrate

• nitrate to nitrites

Answer 1

Denitrifying bacteria convert nitrates to molecular nitrogen.

Explanation:

Denitrifying bacteria, such as Pseudomonas, reduce nitrates to nitrous oxide, nitric oxide and finally to molecular nitrogen. This process returns nitrogen to the atmosphere.