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Question

Predominant material present in cork cell walls is
  1. Lignin
  2. Suberin
  3. Chitin
  4. Pectin

A
Lignin
B
Chitin
C
Suberin
D
Pectin
Solution
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Suberin is a waterproofing waxy layer. Its main function is to serve as a barrier to movement of water and solutes. A mature cork cell is nonliving and has cell walls that are composed of a waxy substance that is highly impermeable to gasses and water, called as suberin. Thus, option C is correct.

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