Question

Cork cells consist of _____ on their walls which makes them impervious to gases and water.

Answer 1

Suberin:

1. It is a complex polyester biopolymer.
2. It is made of long-chain fatty acids called suberin acids and glycerol.
3. Due to the presence of fatty acids, it is hydrophobic in nature.
4. Hence they become a barrier to water, gases, and solutes.
5. Cork cells pose suberin which makes them impermeable to gases and water.

Final answer: Cork cells consist of suberin on their walls which makes them impervious to gases and water.