GENERAL HISTOLOGY

Detailed explanation-1: -Secondary cell walls contain additional components, such as lignin, which is hard and occupies the interstices between the other components, making the walls rigid and permanent.

Detailed explanation-2: -The cell wall is the outermost layer of a plant cell. It makes the cell stiff and gives it protection. Animal cells do not have cell walls. The cell membrane is a protective layer that surrounds every cell.

Detailed explanation-3: -Generally, the cell wall of plants is composed of strong Cellulose but the layer of lignin forms the Secondary cell wall and this is what gives it the strength and rigidity. The cell is a necessary part of the plant cell as it protects and provides the cells the structural support.

Detailed explanation-4: -Biology definition: A cell wall is a structural layer next to the cell membrane with the primary role of giving the cell rigidity and protection from mechanical stress.

Detailed explanation-5: -The cell wall is a tough, rigid outer layer of the plant and fungal cells. It provides the cells with structural support and protection. The strongest component of the cell wall is a carbohydrate called as cellulose, a polymer of glucose.