Question

Cork is impervious to water due to the presence of ............ in its cell wall.

• A. Silica
• B. $CaC{O}_3$
• C. Suberin
• D. Cuticle

Answer 1

Answer: (C)

Suberin

Cork or outer tissue of bark, protective, waterproof outer covering of the stems and roots of woody plants. Cork is a specialized secondary tissue produced by the cork cambium of the plant. The regularly arranged walls of cork cells are impregnated with a waxy material, called suberin, that is almost impermeable to water or gases.

So, the correct answer is 'Suberin'.