Assertion: Manganese is an activation of enzyme nitrite reductase
Reason : Manganese deficient cells prefer ammonia over nitrate

Options

A. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C. If the assertion is true but the reason is false
D. If both the assertion and reason are false

Answer

D

Explanation

Molybdenum is absorbed by plants in the soil in the form of molybdate ions `(MoO_2^(+))`. It is a component of several enzymes including nitrogenase and nitrate reductase both of which participate in nitrogen metabolism. It is essential for nitrogen fixation.