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| Results 1 - 10 of about 14 for the
Acoelomates
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| Exact Match: Acoelomates |
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Acoelomates consist of two modern phyla of worms -- the Platyhelminthes and Nemerteans . These animals are quite common with perhaps 20,000 species known. Some are free living. Many are parasitic. Although the acoelomates are triploblastic with three germ layers in the developmental forms, they are developmentally more primitive than the coelomate phyla. They...
http://www.all-about-all.info/article/Acoelomata
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Acoelomates consist of two modern phyla of worms -- the Platyhelminthes and Nemerteans . These animals are quite common with perhaps 20,000 species known. Some are free living. Many are parasitic. Although the acoelomates are triploblastic with three germ layers in the developmental forms, they are developmentally more primitive than the coelomate phyla. They...
http://www.all-about-all.info/article/Acoelomata
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...is primarily powered by hydrostatics, and they reproduce entirely by parthenogenesis . Originally they were thought to have a pseudocoelom , but this was an artifact created by preservation methods, and they are now known to be acoelomate . Genetic studies place them as close relatives of the flatworms . About 450 species are known. Its average life span is very short - about three days.
http://www.all-about-all.info/article/Gastrotrich
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... with separate mouth and anus . Most Bilateria also have an internal body cavity, called a coelom when it lies within the mesoderm, and a pseudocoelom otherwise. It was previously thought that acoelomates gave rise to the other group, but it now appears that in the main acoelomate phyla ( flatworms and gastrotrichs ) the absence is secondary. Even the oldest known bilaterian animal, Vernanimalcula...
http://www.all-about-all.info/article/Bilateria
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...development provides additional clues to the evolution of multi-celled animals. The origin of the coelom is unknown. It has been proposed that it developed within a group of organisms known as acoelomates via some members of another group known as " pseudocoelomates ". Alternatively, it is thought that the coelom may have evolved from gastric pouches ("stomachs" sort of) in cnidarians . ...
http://www.all-about-all.info/article/Body cavity
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Acoelomates consist of two modern phyla of worms -- the Platyhelminthes and Nemerteans . These animals are quite common with perhaps 20,000 species known. Some are free living. Many are parasitic. Although the acoelomates are triploblastic with three germ layers in the developmental forms, they are developmentally more primitive than the coelomate phyla. They...
http://www.all-about-all.info/article/Acoelomata
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... Lineus longissimus . Some texts quote lengths of up to 60 m, in which case, L. longissimus would be the longest animal alive (female blue whales reach about 34 m). Although generally considered acoelomate (that is, without a coelom -filled body cavity ), the anatomy of the proboscis includes a coelom cavity. An old name for the phylum, Rhynchocoela, records this fact. They also possess a circulatory...
http://www.all-about-all.info/article/Nemertina
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...layer forms the circulatory system and future gut wall. Because the mesoderm can form different ways in relation to the developing embryo's ectoderm , this is used as a method of categorizing animals . They are catagorized as: Acoelomates , Pseudocoelomates , and Coelomates , respectively. This anatomy article is a stub . You can help Wikipedia by expanding it .
http://www.all-about-all.info/article/Mesoderm
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... Platyhelminthes Gastrotricha Rotifera Acanthocephala Gnathostomulida Micrognathozoa The Cycliophora may also belong here. The Platyhelminthes and Gastrotricha are acoelomate. The other phyla have pseudocoeloms, and share characteristics such as the structure of their jaws and pharynx, although these have been secondarily lost in the parasitic Acanthocephala. They...
http://www.all-about-all.info/article/Platyzoa
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...(a marine plankton species); about 100 species known. Phylum Cycliophora -- 1 species known: Symbion pandora , a microscopic symbiont of lobsters Phylum Gastrotricha -- gastrotrichs, aquatic acoelomates; about 450 species known, all microscopic Phylum Kinorhyncha -- kinorhynchs or "mud dragons"; about 150 species known, all microscopic Phylum Loricifera -- loriciferans; about 10 species...
http://www.all-about-all.info/article/Aschelminth
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Also helps finding: coelomates, aoelomates, acelomates, acolomates, acoeomates, acoelmates, acoeloates, acoelomtes, acoelomaes, acoelomats, acoelomate, qcoelomates, wcoelomates, scoelomates, zcoelomates
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