Class 11 NEET Biology Biological Classification Questions Part 2

Bacterial capsule usually consists of a polysaccharide layer that lies outside the cell envelope. The capsule is found in both gram-positive and gram-negative bacterium.The capsule is considered as virulence factor because it enhances the ability of bacteria to cause disease. It protects the bacterial cell from engulfment by macrophages.Capsules also contain water which protects the bacterium from desiccation.