NEET Botany Secondary Growth MCQ Question
If a tree in a temperate region shows 10 annual rings, and the average width of spring wood is 2 mm while that of autumn wood is 1 mm, what is the total width of the xylem produced over these 10 years?
30 mm
10 mm
20 mm
50 mm
Correct Answer
Detailed Explanation
Each annual ring consists of a spring wood layer and an autumn wood layer. Therefore, for 10 annual rings, the total width is 10 * (2 mm + 1 mm) = 30 mm.
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