Question

Nitrifying bacteria convert to nitrate.

• A. nitrite
• B. proteins
• C. nitrous dioxide
• D. ammonia

Answer 1

The correct option is D ammonia

Nitrifying bacteria like Nitrosomonas and Nitrobacter convert ammonia or ammonium $\left(N{H}_3/N{H}_4^{+}\right)$ to nitrite $\left(N{O}_2^{-}\right)$ and then convert $N{O}_2^{-}$ to nitrate $\left(N{O}_3^{-}\right)$. It is very easy for plants to take up nitrogen in the form of $N{O}_3^{-}$​. Therefore, these bacteria help the plants gain essential nitrogen in the form of nitrates.