Paramecium caudatum

• Free- living fresh water protest.

• Entire body surface is uniformly ciliated.

• On the ventral surface of the body, present an oral groove, leading to buccal cavity and cytopharnyx.

• Cilia are used for locomotion and food collection.

• Nutrition is holozoic.

• A dimorphic nuclear apparatus with a bean shaped macronucleus and a spherical micronucleus.

• Reproduce sexually by conjugation and asexually by transverse binary fission