Q33 / 160 · JIPMER 2004 · Botany
Periderm includes :
- Acork cambium only
- Bcork cambium and cork
- Ccork and secondary cortex
- Correct answerDcork cambium, cork and secondary cortex
Solution
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.
Hence, the correct answer is option: 'D'.