Question

Which kingdoms have cell walls?

Answer 1

Cell walls:

1. A cell wall is a nonliving, rigid structure that acts as an outer covering for the plasma membrane.
2. Monera, protista, fungi and plantae have cell walls.
3. It helps in giving the proper shape to the cell and protects the cell from mechanical damage.
4. It not only protects from infection but also helps in cell-to-cell interaction and prevents the entry of micromolecules that are not necessary for the cell. Cell walls in algae are made up of cellulose, galactans, mannans, and minerals like calcium carbonate.
5. The plant cell wall consists of cellulose, pectins, proteins, and hemicelluloses.
6. Cell walls of the young plant cells are the primary cell that is involved in growth. Later on, It matures into a secondary wall.