Question

Periderm includes

• A. cork cambium only
• B. cork cambium and cork
• C. cork and secondary cortex
• D. cork cambium, cork and secondary cortex

Answer 1

Answer: (D)

Periderm formation occurs in the root and stems of dicots and gymnosperm in extra stelar region with the help of cork cambium. Periderm is external secondary protective tissue and compreses of cork, cork cambium and secondary cortex.