Presence of which chemical in cork cells makes them impervious to water and gases:1 pointsuberinlignincuticlenone

The chemical that makes cork cells impervious to water and gases is suberin.

Explanation

Suberin is a hydrophobic substance found in the cell walls of cork cells, contributing to their impermeability. This lignified substance serves a crucial role in protecting plants by preventing water loss and providing an effective barrier against pathogens and other environmental factors.

Cork cells, which originate from the cork cambium, accumulate suberin as they mature, allowing them to form a protective outer layer known as the periderm. This adaptation is vital for many plants, especially those in arid or variable environments, as it helps maintain internal moisture levels and enhances resistance to disease.

In contrast, lignin primarily strengthens plant cell walls, while cutin is found in the cuticle of leaves and plays a role in water retention for leaf surfaces but is not responsible for cork's impermeability. Therefore, the presence of suberin is critical in ensuring cork cells serve their protective function effectively.

Final Answer

Suberin