Complementary cells of lenticels develop from
A.Phellem – The tissue of suberised dead cells formed on the outer side of the phellogen or cork.
B.Phelloderm – the parenchymatous tissue formed on the inner side of the phellogen or cork.
C.Endodermis – innermost layer of cortex in roots and dicot stem.
D.Phellogen – A ring of meristematic tissue formed by the dedifferentiation of outer cells of cortex (parenchyma) present in the general cortex of dicot stem, during extra stelar secondary growth is called Cork cambium or phellogen. It produces complementary cells of lenticels
So, the correct answer is ‘Phellogen’