Which of the following bacterium converts Nitrite to Nitrate?

Correct option is A

The correct answer is Nitrobacter.
· Nitrobacter oxidizes nitrite (NO₂⁻) to nitrate (NO₃⁻).
· Nitrosomonas converts ammonia to nitrite.
· Both are nitrifying bacteria and play a role in nitrogen cycle.
· This process is called nitrification.
Information Booster:
· Nitrification: Ammonia → Nitrite → Nitrate
· Essential for soil fertility and plant nutrition.
· Occurs aerobically in well-aerated soils.
· Nitrate is absorbed by plants for protein synthesis.