Assertion Although atmosphere contains about `78%` of `N_(2)`, but plants directly cannot use it
Reason Plants cell contain cell wall.

Options

A. Both Assertion and Reason are true and Reason is the cprrect explanation of Assertion
B. Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion
C. Assertion is true, but Reason is false
D. Assertion is false, but Reason is true

Answer

B

Explanation

Although, atmosphere contains about `78%` of `N_(2)`, but plants cannot use it directly due to the absence of enzymes, which directly metabolism this crude `N_(2)`. The characteristic feature of plants cells is the presence of cell wall.