What is a Plant Cell Wall?
A plant cell wall is a tough layer surrounding the cell that provide a number of functions:
- strength to support the plant
- fix cell shape
- flexibility
- porosity
- water-proofing
- barrier to pests
- protection against environmental stress
Plant cell walls are a complex mixture of polysaccharides, proteins, lignins, inorganic compounds and water.
Primary cell walls are found in young growing tissue
Secondary (thickened) cell walls are found in tissue that has stopped growing
