cell wall

Cell wall

Cell wall is present in plant cell and is the outer most layers, made up of a thick, rigid, non-living substance, called cellulose, enclosing a granular jelly like living substance, the protoplasm. While the cell is still growing, the wall is fairly plastic and extensible. Once the cell has matured fully, it gives a definite shape being tough and resistant, providing strength and protection to the protoplasm. While the cell is still growing, the wall is fairly plastic and extensible. Once the cell has matured fully, it gives a definite shape being tough and resistant, providing strength and protection to the protoplasm.
The cell wall is freely permeable to gases and water i.e., it allows them to diffuse through it in either direction. In the young cell, it is single layered and is known as the primary cell wall, which is thin, delicate and has pectin substance. There are some minute breaks, through which delicate strands of cytoplasm pass into adjoining cells, known as plasmodesmata. Later on, an additional layer of cellulose impregnated with lignin is added. This layer is called secondary wall which provides strength to the plant. The cementing layer and the middle lamella, hold the adjacent cells together.
cell wall

              Cell wall

Major function of the Cell Wall

1.It provides mechanical and skeletal support to the plant body.
2.It forms a framework around the protoplasm and protects it.
3.It is responsible for giving strength and rigidity to the cell.
2 replies
  1. Stacy
    Stacy says:

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    Reply

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