A: Complementary cells are cut-off by phellog | vedclass

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(C) The Assertion is correct because phellogen (cork cambium) cuts off cells towards the outside,which differentiate into complementary cells (forming

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Assertion is correct,but Reason is incorrect.

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(C) The Assertion is correct because phellogen (cork cambium) cuts off cells towards the outside,which differentiate into complementary cells (forming lenticels) and cork (phellem).However,the Reason is incorrect because phellogen is entirely secondary in origin,as it arises from the dedifferentiation of permanent tissues like cortical cells or pericycle cells during secondary growth.

$A$: Complementary cells are cut-off by phellogen towards the outside.
$R$: Phellogen is partially secondary in origin.

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$A$: Complementary cells are cut-off by phellogen towards the outside.$R$: Phellogen is partially secondary in origin.