What are three types of flatworms?
Types of Flatworms (planarian, tapeworm, fluke) Planarian (also known as Dugesia)–lives in freshwater –mostly a scavenger, also feeds on protists –hermaphrodites –has a simple brain (ganglia) and nervous system, plus 2 eyespots (see handout on planarian) –they can regenerate (regrow parts) Tapeworms –parasitic worms that live in the digestive system –they have segmented bodies (each segment is called a proglottid) –each proglottid is a reproductive organ –tapeworms can grow very long (40 feet!) –attach to the intestine with hooks and suckers on the head –do not have well developed digestive systems Flukes –most have complex life cycles involving more than one host –Schistosoma (blood fluke) spends part of its life in a snail, humans get infected when they wade in the water containing the snails, the larva then invade the human’s blood vessels –eggs are passed thru human feces into water where the snail is infected Now ya know what I know!
Types of Flatworms (planarian, tapeworm, fluke) Planarian (also known as Dugesia)–lives in freshwater –mostly a scavenger, also feeds on protists –hermaphrodites –has a simple brain (ganglia) and nervous system, plus 2 eyespots (see handout on planarian) –they can regenerate (regrow parts) Tapeworms –parasitic worms that live in the digestive system –they have segmented bodies (each segment is called a proglottid) –each proglottid is a reproductive organ –tapeworms can grow very long (40 feet!
