Q. The cork cambium, cork and secondary cortex are collectively called
A) Phellogen
B) Periderm
C) Phellem
D) Phelloderm
Explanation
The periderm is a secondary protective structure and is made up of cork cambium (phellogen), cork (phellem) and secondary cortex (phelloderm).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.