Webflatworm in American English (ˈflætˌwɜːrm) noun any worm of the phylum Platyhelminthes, having bilateral symmetry and a soft, solid, usually flattened body, including the planarians, tapeworms, and trematodes; platyhelminth Most material © 2005, 1997, 1991 by Penguin Random House LLC. WebApr 11, 2024 · Genera The following genera are listed by the World Register of Marine Species: Acerotisa Strand, 1928 Anciliplana Heath & McGregor, 1912 Ascidiophilla Newman, 2002 Cycloporus Lang, 1884 Eurylepta …
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WebFlatworm definition, any worm of the phylum Platyhelminthes, having bilateral symmetry and a soft, solid, usually flattened body, including the planarians, tapeworms, and … christian acoustic bands
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WebJan 11, 2024 · Flatworms range in length from about 1 millimeter (0.04 inches) to more than 20 meters (66 feet). They have a flat body because they do not have a coelom or even a pseudocoelom. They also lack a respiratory system. Instead, their cells exchange gases by diffusion directly with the environment. They have an incomplete digestive system. WebFlatworms (Platyhelminthes, Greek "platy"': flat; "helminth": worm) are a phylum of invertebrates. They are relatively simple animals. They have soft bodies. With about … The flatworms, flat worms, Platyhelminthes, or platyhelminths (from the Greek πλατύ, platy, meaning "flat" and ἕλμινς (root: ἑλμινθ-), helminth-, meaning "worm") are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates. Unlike other bilaterians, they are acoelomates (having no body … See more Distinguishing features Platyhelminthes are bilaterally symmetrical animals: their left and right sides are mirror images of each other; this also implies they have distinct top and bottom surfaces and … See more The relationships of Platyhelminthes to other Bilateria are shown in the phylogenetic tree: The internal … See more Parasitism Cestodes (tapeworms) and digeneans (flukes) cause diseases in humans and their livestock, whilst monogeneans can cause serious … See more • Campbell, Neil A. (1996). Biology (Fourth ed.). New York: Benjamin/Cummings Publishing. p. 599. ISBN 0-8053-1957-3. • Crawley, John L.; van de Graff, Kent M., eds. (2002). A Photographic Atlas for the Zoology Laboratory (Fourth ed.). Colorado: Morton … See more Early classification divided the flatworms in four groups: Turbellaria, Trematoda, Monogenea and Cestoda. This classification had long been recognized to be artificial, and in … See more An outline of the origins of the parasitic life style has been proposed; epithelial feeding monopisthocotyleans on fish hosts are basal in the Neodermata and were the first shift to parasitism from free living ancestors. The next evolutionary step was a dietary change from See more • Miracidium • Regenerative medicine • Schistosoma See more george harrison indian songs