Question

Given below are two statements :
one is labelled as
Assertion (A) and the other is labelled as
Reason (R).
Assertion (A) :
Some microorganisms can use nitrate as a terminal electron acceptor under anaerobic conditions.
Reason (R) :
Nitrate can be fully reduced to ammonia in the process of denitrification.
In the light of the above statements, choose the most appropriate answer from the options given below :

• A. Both (A) and (R) are correct and (R) is the correct explanation of (A)
• B. Both (A) and (R) are correct but (R) is not the correct explanation of (A)
• C. (A) is correct but (R) is not correct
• D. (A) is not correct but (R) is correct

Hint:

Remember: \[ \text{Denitrification} \Rightarrow NO_3^- \rightarrow N_2 \] while: \[ NO_3^- \rightarrow NH_3 \] occurs in: \[ \text{Dissimilatory nitrate reduction to ammonia (DNRA)} \]
• Nitrate can serve as a terminal electron acceptor in anaerobic respiration.

Answer 1

The Correct Option is C