A) phellem, phelloderm and vascular cambium
B) periderm and secondary xylem
C) cork cambium and cork
D) phellogen, phellem, phelloderm and secondary phloem
Correct Answer: D
Solution :
All the dead cells lying outside the phellogen constitute the bark of plant. It may include epidermis, cork, hypodermis and even part of cortex depending upon the position of origin of cork cambium or phellogen.
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