Question

Bark of a tree is impervious to gases and water. Give reason.

Answer 1

The cell wall of a bark have a liquid called suberin present in it which makes it impervious to gases and water.

Answer 2

• The cells of the bark are dead and compactly are without intercellular spaces
• They also have a chemical called suberien in the walls
• Thus makes them impervious to gas and water

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