Schistosoma species, the blood fluke . Live in bloodstream, with male and female continously copulating. Eggs with spines to help passage in either feces or urine. Miracidia hatches and sporocyst stage matures in snail before next larval stage or cercariae, which penetrate human skin and mature in bloodstream. The tapeworms are well known intestinal parasites of vertebrates.
Tapeworms have no mouth or digestive tract, since absorb food directly through skin.
Both male and female parts are present in each. Taeniarhynchus saginatus , the beef tapeworm . Adults live in human small intestine. Taenia solium , the pork tapeworm . In many ways, the pork tapeworm can be more deadly to a human host than the beef tapeworm.