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Choanoflagellate
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High Quality Content by WIKIPEDIA articles! The choanoflagellates are a group of free-living unicellular and colonial flagellate eukaryotes considered to be the closest living relatives of the animals. As the name suggests, choanoflagellates (collared flagellates) have a distinctive cell morphology characterized by an ovoid or spherical cell body 3-10 µm in diameter with a single apical flagellum surrounded by a collar of 30-40 microvilli (see figure). Movement of the flagellum creates water currents that can propel free-swimming choanoflagellates through the water column and trap bacteria and detritus against the collar of microvilli where these foodstuffs are engulfed. This feeding provides a critical link within the global carbon cycle, linking trophic levels. In addition to their critical ecological roles, choanoflagellates are of particular interest to evolutionary biologists studying the origins of multicellularity in animals. As the closest living relatives of animals, choanoflagellates serve as a useful model for reconstructions of the last unicellular ancestor of animals.
Weitere Informationen
- Allgemeine Informationen
- GTIN 09786130855918
- Editor Frederic P. Miller, Agnes F. Vandome, John McBrewster
- EAN 9786130855918
- Format Fachbuch
- Titel Choanoflagellate
- Herausgeber Alphascript Publishing
- Anzahl Seiten 124
- Genre Biologie
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