Answer: Cork cambium (phellogen).
- A Cork cambium (phellogen)
- B Vascular cambium
- C Apical meristem
- D Intercalary meristem
Correct answer: A. Cork cambium (phellogen)
Explanation: The cork cambium (phellogen) cuts off cork (phellem) outward, forming the protective bark.
Concept context
Internal tissue organisation: meristems, permanent tissues (xylem, phloem, parenchyma), and secondary growth. Frequently tested in NEET.