Assertion: Each molecule of ribulose-1, 5-bisphosphate fixes one molecule of CO2.
Reason: Three molecules of NADPH and two ATP are required for fixation of one molecule of CO2.
(a) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
(b) If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
(c) If Assertion is correct but Reason is incorrect.
(d) If both the Assertion and Reason are incorrect.
(c) If Assertion is correct but Reason is incorrect.
Explanation:
Each molecule of ribulose-1, 5-biphosphate fixes one molecule of carbon dioxide with the addition of water, thereby resulting in the formation of two molecules of 3-phosphoglyceric acid (3-PGA).
The fixation and reduction of one molecule of CO2 requires three molecules of ATP and two of NADPH, coming from the photochemical reactions.