AIIMS 2018 Botany C3 and C4 Pathways MCQ Question
Assertion: C₃ cycle is found in all plant
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
The assertion that the C₃ cycle is found in all plants is true; however, it is not the correct explanation because not all plants utilize the C₃ cycle exclusively; some plants, like succulents and certain grasses, utilize C₄ or CAM pathways for photosynthesis. Option A is incorrect as the reason does not provide a valid explanation for the assertion. Option C is incorrect because the assertion is true, and option D is false since the assertion is indeed correct. Understanding the diversity of photosynthetic pathways is crucial for grasping plant adaptation to various environmental conditions.
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