Assertion : Each molecule of ribulose-1 ,5 biphosphate fixes one molecule of `CO_(2)`
Reason : Three molecules of NADPH and two ATP are required for fixation of one molecule of `CO_(2)`

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

Each molecule of Ribulose 1, 5 biphosphonate fixes one molecule of `CO_2` to form an unstable compound which splits into two molecules of 3 – phosphoglyceric acid catalyzed by enzyme ribulose bisphosphate carboxylase.
Two molecules of NADPH and three molecules of ATP are required for fixation of one molecule of `CO_2`.