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AIPMT PRELIMS2009Botany-Plant Anatomy

AIPMT PRELIMS 2009 Botany Xylem Structure MCQ Question

Type: MCQ-conceptual-Medium-Class 11

The annular and spirally thickened conducting elements generally develop in the protoxylem when the root or stem is:

A

elongating

B

widening

C

differentiating

D

maturing

Correct Answer

Option D

Detailed Explanation

Annular and spiral thickenings are characteristic of protoxylem, which is the first-formed xylem that develops during the early stages of maturation.

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