NEET Biology question

Old dicot roots differ from old dicot stem in

(A)Absence of cortex
(B)Absence of primary phloemCorrect
(C)Absence of vascular bundles
(D)Presence of xylem

Answer: (B)

Solution

As secondary growth proceeds extensively in an old dicot root, the comparatively thin-walled primary phloem is progressively crushed and becomes indistinguishable, while cortex, vascular tissue and xylem remain present in both old root and old stem (though their detailed arrangement

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Question ID VK-105318