EVERYDAY SCIENCE

Detailed explanation-1: -Following are some of the major cell wall functions observed: The plant cell wall provides definite shape, strength, and rigidity. It also provides protection against mechanical stress and physical shocks. It helps to control cell expansion due to the intake of water.

Detailed explanation-2: -The cell wall surrounds the plasma membrane of plant cells and provides tensile strength and protection against mechanical and osmotic stress. It also allows cells to develop turgor pressure, which is the pressure of the cell contents against the cell wall.

Detailed explanation-3: -The plant cell wall thus has a “skeletal” role in supporting the structure of the plant as a whole, a protective role as an enclosure for each cell individually, and a transport role, helping to form channels for the movement of fluid in the plant.

Detailed explanation-4: -Cell wall is present outside the cell membrane. It has the function of giving shape and rigidity to the cell. Cell wall is present only in plants hence it is the characteristic feature that distinguishes between plant and animal cells.

Detailed explanation-5: -The strongest component of the cell wall is a carbohydrate called as cellulose, a polymer of glucose. When the additional layer of lignin is added to the primary cell wall a secondary cell wall is formed. Secondary cell wall increases the rigidity and strength of the cell.