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Annelid - Wikipedia, the free encyclopedia
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Annelid - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/Annelid
Biology > Biota > Fauna > Annelida
annelid amputated animal annulus anus archiannelida arthropod articulata asexual reproduction blood vessel body cavity
Jan 9, 2008
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Other links at Biology > Biota > Fauna > Annelida
Phylum Annelida Introduction Annelids (segmented worms) are extremely successful and have invaded terrestrial, freshwater, and marine habitats. They include familiar forms such as earthworms and leeches and many diverse marine organisms.
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Annelid worms, brought to you by Biological Sciences at the University of Paisley.
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Analytical Chemistry. Classified links of the Chemistry Biology Information Center of ETH Zürich.
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Fluid in coelom provides hydrostatic pressure for hydrostatic skeleton . Epidermis secretes cuticle.
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These are the most highly developed helminths, having segmented bodies, a circulatory system, nephridia (part of a primitive excretory system, but still much more advanced than the flame cells of, for example, the Platyhelminthes), a highly developed digestive system, and a primitive brain.
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The phylum Annelida, segmented worms, is characterized by the possession of a coelom (body cavity), setae (moving bristles), and a body divided into segments by transverse rings.
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Segmented worms - metameric organization (one compartment after another somites segments organized about the same). Annelids are very complex animals. First animal with a true coelom which runs the entire length of the body. Triploblastic; bilateral symmetry.
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Annelida (segmented worms) Path Digital Universe Home > Life on Earth > Tree of Life > Nucleated Life (Eukaryota) > Animals > Annelida (segmented worms) Dioramas /content/2728/Dio.jpg Children Links
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