Essays on Marine Worms

marine worms Flatworms belong to the phylum Platyhelminthes. They have the simplest body plan of solely bilater exclusivelyy symmetrical animals. They are called flavorlessworms because their bodies are compressed. The mouth is the single enterprisingness into the digestive cavity the flatworms have. Food is taken in done 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 many purposes.

It allows the worm to hid in small spaces, to fit into the opening of other animals if the worm is parasitic, and it means that all the cells are closely enough 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 full essay, order it on our website: Ordercustompaper.com

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