NEET Botany Secondary Growth Assertion Reason Question
Assertion (A): In temperate regions, the cambium is more active in spring than in winter.
Reason (R): Spring wood has vessels with wider cavities than autumn wood.
Both A and R are true, and R is the correct explanation of A.
Both A and R are true, but R is not the correct explanation of A.
A is true but R is false.
A is false.
Correct Answer
Detailed Explanation
The NCERT context states that in spring, the cambium is very active, producing xylary elements with wider vessel cavities, resulting in spring wood. In winter, cambium activity decreases, producing autumn wood with narrower vessels.
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