Cork Simple Tissues: These types of tissue consist dead cells with no intercellular spaces. They form the outer layer of old tree trunks. Cork cells have a chemical called suberin in their walls that makes them impervious to gases and water. Cork tissue protects plants from injuries, germs and water loss.
Definition. noun, plural: corks. (botany) A part of the periderm that protects the inner plant tissues from mechanical injuries, water loss, and pathogens, and comprised of cells that are dead at maturity and filled with air, tannins or resins