Question

what ia the use of cell wall in plants? and why it is not present in animals??

Answer 1

Cell wall is the outermost covering of plant cells, bacterial cells ,etc. Cell wall is rigid part of cell that provide it protection, proper shape, strength, etc. It is majorly composed of cellulose in plants. It is not found in animals cell. As we know that plants are immobile . They cannot escape the danger like animals. They need to be additionally protected from such dangers standing on their fixed position. But animals are mobile, so they do not need such additional protection. This is the reason why cell wall is found in plant cells, but not in animals cells.

Other reasons for absence of cell wall in animal cells are as follows:

) Animal cells have other forms of support such as the exoskeleton and endoskeleton.
2) Animal cells can regulate osmotic pressure by pumping ions and salts across the cell membrane. So, they do not require the cell wall to protect themselves from bursting due to endosmosis.
3) Animal cells require flexibility for function and movement, which would not have been possible if the cells were surrounded by the cell wall. This is because the cell wall restricts flexibility.