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When secondary growth in thickness is in...

When secondary growth in thickness is initiated in a dicot root, which of the following happens first ?

A

Anticlinal division occurs so that cambium become circular

B

Paranchyma between xylem and phloem becomes meristematic

C

Cambium initial between xylem and phloem divides

D

Pericycle strands outside primary xylem divide

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The correct Answer is:
B
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