Paramecia is a living organism belonging to the large named the ciliated protozoan. His size ranges from 100 to 300 microns. This unicellular animal uses his numerous cilia to move and feed off bacteria and small algae.
The paramecium is a fresh water organism found in abundance in ponds, small and slow streams, or biofilms at the surface of puddles and dead plants. The cell nucleus is divided in two parts, a small micronucleus and a large macronucleus. The first one is responsible for the sexual functions which generate genetic variation and the second provides trophic functions and asexual reproduction
