First slide
Secondary Growth
Question

Complementary cells are produced by meristems A and Companion cells are formed by meristem B. A and B are respectively

Easy
Solution

Complementary cells are living cells present in lenticels of Cork and formed from cork cambium. Companion cells are cells of phloem of angiosperms formed from apical meristem, vascular cambium, fascicular cambium and interfascicular cambium. 

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