Chemistry NEET Full Syllabus Mock Test 180 Question New Syllabus Mock Test - 4 PCB Single Correct MCQ
Published on: August 14, 2026

Phellogen is a couple of layers of thick, made of narrow, thin-walled and nearly rectangular cells, which cuts off cells on the both sides. In which

A
outer cells differentiate into phelloderm and inner cells differentiate into phellem
B
outer cells differentiate into secondary cortex and inner cells differentiate into cork
C
outer cells differentiate into cork and inner cell differentiate into secondary cortex
D
outer cells differentiate into periderm and inner cells differentiate into sapwood

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The correct answer is:
C

Phellogen is a couple of layers thick. It produces secondary cortex or phelloderm on inner side and cork or phellem on outer side. The cells of phellem are dead, suberised and impervious to water. Cells of phelloderm are thin walled, living and store food.

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