Monday, November 18, 2013

Essays on Marine Worms

marine worms Flatworms belong to the phylum Platyhelminthes. They cast off the simplest remains plan of entirely bilater exclusivelyy symmetrical animals. They are called flavorlessworms because their bodies are compressed. The mouth is the single initiative into the digestive cavity the flatworms have. Food is taken in with with(p) this hole and wastes are discharged also through this hole. Flatworms have a well-defined nervous, muscular, excretory, and reproductive system. The flatworm distributes the victuals it digests through a digestive tube that branches throughout all of its body parts. The fact that the worms body is flat serves numerous purposes.
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It allows the worm to hid in small spaces, to fit into the opening of early(a) animals if the worm is parasitic, and it means that all the cells are closely liberal to the surface for exchange of oxygen and carbon dioxide with the environs (Meinkoth 399). there are about thirty thousand species of worms in the phylum Platyhelminthes. twenty five thousand of these worm...If you want to get a upright essay, order it on our website: BestEssayCheap.com

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