Paramecium

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Paramecium Meaning and Definition in Dictionary

Definitions from Wordnet 2.0


  • any member of the genus Paramecium

Definitions from Wiktionary


  • any member of the genus Paramecium

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Paramecium Meaning and Definition in Wikipedia


Paramecium is one of the best-known protists, often taught in school biology courses. It is a ciliate genus. Ciliates are a clade of protists which move by synchronous waves of tiny projections from their cuticle. These projections are called cilia (singular: cilium). They live in freshwater ponds, and eat bacteria, and other protists such as single-celled algae.

Paramecium species usually have bacterial symbionts, and some species have green algal symbionts.

Reproduction in Paramecium has been researched for many years. Paramecium has two nuclei (a large macronucleus and a single compact micronucleus).

This reproductive system is unique to ciliates, and is one of the reasons why we think the Protista is not a natural clade (monophyletic), but rather a polyphyletic collection of single-celled organisms.



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