The tissue produced by cork cells is called cork (also known as phellem). This protective tissue forms the outer layer of bark in many plants.
Understanding Cork Tissue
Cork tissue is produced by the cork cambium, a specialized layer of cells within the outer bark.
The Cork Cambium and Its Products
According to the reference provided:
- The cork cambium produces cork (phellem) towards the outside.
- It produces a thin layer of cells called phelloderm towards the inside.
- Together, the cork, cork cambium, and phelloderm constitute the outer bark.
Function of Cork Tissue
Cork cells are dead at maturity and their cell walls are impregnated with suberin, a waxy substance that makes the tissue impermeable to water and gases. This provides protection to the underlying tissues from:
- Desiccation (drying out)
- Physical damage
- Infection
