Which of the following statement about cork cambium is incorrect ?
It forms a part of periderm
It is responsible for the formation of lenticels
It is couple of layers thick
It forms secondary cortex on its outerside
Cork cambium or phellogen forms during secondary growth in the extra-stellar region of plants. It forms the cork or phellem outer side and the secondary cortex or phelloderm inner side.
Hence, option 4 is incorrect.