What is a Pellicle in a paramecium?

A pellicle in a paramecium is a flexible, protective layer that lies just beneath the cell membrane. It is composed of protein and polysaccharides, providing structural support and maintaining the cell's shape while allowing for some degree of flexibility. The pellicle also plays a role in the organism's movement and responsiveness to environmental changes. This feature distinguishes paramecia from other unicellular organisms that may have more rigid cell walls.