Question

Nitrate reductase enzyme is responsible for the formation of

• A. N${}_2$
• B. NO${}_2$
• C. NO${}_3$
• D. Ammonia

Answer 1

The correct option is B NO${}_2$

Plants absorb most of the nitrogen as nitrates from soil. Nitrates are acted upon by plant enzyme nitrate reductase which reduces nitrates to nitrites, i.e, from NO${}^{3-}$ to NO${}^{2-}$.

So, the correct answer is option B.