First slide

Secondary Growth

Question

Periderm includes:

Easy

A

Entire bark
B

Periderm+ Secondary phloem
C

Vascular cambium+ Secondary phloem+ Secondary cortex
D

Phellogen+ Phellem+ Phelloderm

Solution

Phellogen, phellem, and phelloderm are collectively known as periderm.
Bark is a non-technical term that refers to all tissues exterior to the vascular cambium, therefore including secondary phloem. Bark refers to a number of tissue types, viz., periderm and secondary phloem.

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