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The flatworms, or Platyhelminthes or Plathelminthes are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates. Unlike other bilaterians, they are acoelomates, (having no body cavity), and no specialized circulatory and respiratory organs, which restricts them to having flattened shapes that allow oxygen and nutrients to pass through their bodies by diffusion. The digestive cavity has only one opening for both the ingestion (intake of nutrients) and egestion (removal of undigested wastes); as a result, the food cannot be processed continuously.
In traditional zoology texts, Platyhelminthes are divided into Turbellaria, which are mostly nonparasitic animals such as planarians, and three entirely parasitic groups: Cestoda, Trematoda and Monogenea; however, since the turbellarians have since been proven not to be monophyletic, this classification is now deprecated. Free-living flatworms are mostly predators, and live in water or in shaded, humid terrestrial environments such as leaf litter. Cestodes (tapeworms) and trematodes (flukes) have complex life-cycles, with mature stages that live as parasites in the digestive systems of fish or land vertebrates, and intermediate stages that infest secondary hosts. The eggs of trematodes are excreted from their main hosts, whereas adult cestodes generate vast numbers of hermaphroditic, segment-like proglottids which detach when mature, are excreted, and then release eggs. Unlike the other parasitic groups, the monogeneans are external parasites infesting aquatic animals, and their larvae metamorphose into the adult form after attaching to a suitable host.
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What is a species found in the Platyhelminthes phylum?
There is no specific scientific name, there is only a Greek root word.
How do platyhelmenthes eat?
Platyhelminthes, or flatworm , are carnivorous animals. They eat small animals and other flatworms. They also eat protists and rotifers.
Is a pinworm a type of roundworm or a flatworm?
flatworm
Where are the organs located in a flatworm?
where are the reproductive organs located in a flatworm
What does a flatworm do to obtain its food?
It seeks and eats other organisms.
In what phylum is the marine flatworm?
The marine flatworm belongs to the Phylum Platyhelminthes.
What phyla does the marine flatworm belong too?
Platyhelminthes is the phyla of the marine flatworm.
What is flatworm enemy?
a dead host because a flatworm need a living host
Do flatworms have body coeloms?
No, a flatworm does not have a body coelom.
What is the symmetry of the marine flatworm?
A marine flatworm has bilateral symmetry.
Is a snail an roundworm or an flatworm?
The snail is a flatworm because it hasn't got segments and legs!!!
Is slug a flatworm?
No. Slugs are a type of mollusc, which is a completely different order.
