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An Intiative by Sri Chaitanya
a
A - iv, B - iii, C - ii, D - i
b
A - iv, B - ii, C - iii, D - i
c
A - iv, B - iii, C - i, D - ii
d
A - iii, B - iv, C - ii, D - i
answer is A.
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Detailed Solution
In woody dicots, at the time of secondary growth, the cork cambium of stem is formed from cortex and that of root from pericycle. Interfascicular cambium of stem is formed from medullary rays. Vascular cambium of root is mainly formed from conjunctive tissue present beneath phloem and a little from pericycle present opposite to xylem.