In addition to the cell membrane, the plant cells contain a thick outer layer known as thecell wall made up of a non-living substance known as cellulose. Unlike the plant cells, the animals lack cell walls. The cell wall protects the plants from variations in temperature, high wind speed, atmospheric moisture etc., by preventing them from moving. It supports the plant cells providing them shape and also makes them rigid.
Cell wall in plant cell
Cell wall in bacterial cell
The jelly-like substance that is found between the cell membrane and the nucleus and makes up the major part of the cell known as the cytoplasm. All the other components of the cell known as the cell organelles are found in the cytoplasm. The mitochondria, Golgi bodies, ribosomes, plastids, etc., are some of the cell organelles which play a specific role.