Q. The cork cambium, cork and secondary cortex are collectively called
A) Phellem
B) Phelloderm
C) Phellogen
D) Periderm
Explanation
[Solution from source] During secondary growth the phellogen (cork cambium), phellem (cork) and phelloderm (secondary cortex) together make up the periderm. Phellem, phelloderm and phellogen are each just one component of it. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.