Question

1. List two characteristics of cork. How is it formed? Mention its role in trees.

Answer 1

a) Cork cells are dead and closely packed without intercellular spaces.
b) Cork cells are made impervious by a layer of suberin, a waxy material.
Cork is formed by the division of cork cambium or the lateral meristem(phelloderm).
Cork provides mechanical strength to trees and is fire resistant.
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Answer 2

Cork is present at the outer surface of a tree made up of suberin.

It is made up of dead cells which are compactly arranges with no intercellular spaces.

Function:The main function of cork is to avoid water loss. The thick material of cork makes it hard or water molecules to pass through it and it also protect the plant from mechanical injuries and infections.