Question

why do plant cells have an additional layer surrounding the cell membrane.what is this layer called and write its functions

Answer 1

this layer is known as cell wall. this makes a cell rigid (provides rigidity). it makes sure of some substance to enter or exit in the cell.

Answer 2

the plant cells have an additional layer surrounding the cell membrane, due to cellulose deposition. this deposition is called the cell wall. it provides the plant cells with a proper structure, support, and rigidity. as plants do not have skeletons so cell walls provide them the strength.