Question

What are the functions of cell wall?

Answer 1

Cell wall:

1. The cell wall is the rigid, semi-permeable protective layer in some cell types.
2. This outer covering is positioned next to the cell membrane (plasma membrane) in most plant cells, fungi, bacteria, algae, and some archaea.
3. Animal cells however, do not have a cell wall.

FUNCTIONS OF CELL WALL:

• Gives the cell a definite shape and structure.
• Provides structural support.
• Protection against infection and mechanical stress.
• Separates interior of the cell from the outer environment.
• It enables transport of substances and information from the cell insides to the exterior and vice versa.
• Also helps in osmotic-regulation.
• Prevents water loss.
• The physiological and biochemical activity of the cell wall helps in cell-cell communication.
• It prevents the cell from rupturing due to tugor pressure.
• Aids in diffusion of gases in and out of the cell.
• Also provides mechanical protection from insects and pathogens.