Question

The periderm includes

• A. bark and cork
• B. cork and cork cambium
• C. secondary cortex
• D. both (b) and (c)

Answer 1

The correct option is D both (b) and (c)

The periderm is a collective term used for cork, cork cambium and secondary cortex.
Cork is also called phellem and is produced on the outer side by the cork cambium or the phellogen.
Phellogen produces secondary cortex or phelloderm on the inner side. The cells of phelloderm may be parenchymatous or collenchymatous.