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A cell wall is an outer layer surrounding certain cells that is outside of the cell membrane. All cells have cell membranes, but generally only plants, fungi, algae, most bacteria, and archaea have cells with cell walls.
Cell wall, specialized form of extracellular matrix that surrounds every cell of a plant. The cell wall distinguishes plant cells from animal cells and provides physical support and protection. Learn about the functions and chemical components of plant cell walls.
The plant cell wall is an elaborate extracellular matrix that encloses each cell in a plant. It was the thick cell walls of cork, visible in a primitive microscope, that in 1663 enabled Robert Hooke to distinguish and name cells for the first time.
A cell wall is an outer rigid semi-elastic supportive and protective layer. It is present around the plasma membrane. It provides mechanical support and helps in maintaining the shape of the plant cell. The cell wall is present in the plant cell and absent in the animal cell which distinguishes them from each other.
In particular, organelles called chloroplasts allow plants to capture the energy of the Sun in energy-rich molecules; cell walls allow plants to have rigid structures as varied as wood trunks...
Unlike animal cells, plant cells have a cell wall surrounding the cell membrane. Although often perceived as an inactive product serving mainly mechanical and structural purposes, the cell wall actually has a multitude of functions upon which plant life depends.
Why do plant cells have a cell wall? Ans. The cell wall gives tensile strength and protection to the plant cell against mechanical and osmotic stress. It also allows cells to develop turgor pressure, which is the pressure exerted by the cell contents against their cell wall thus helping plants in their growth and development.