(1) It is a couple of layers thick
(2) It forms secondary cortex on its outerside
(3) It forms a part of periderm
(4) It is responsible for the formation of lenticels
Answer (2) It forms secondary cortex on its outerside
Sol. Cork cambium (Phellogen) is dedifferentiated tissue, so it is a secondary meristem. It is couple of layers thick and cuts off cork (Phellem) towards outer side and secondary cortex (Phelloderm) towards inner side
Phellem + Phellogen + Phelloderm together constitute periderm.