Flashcards in Platyhelminthes Deck (6)
What are the Platyhelminthes?
What are the general features?
Simple body plan, no coelom
May have lost coelom in evolution
Cephelization - active movement
no gas exchange or circulatory organs
What are the classes?
Tuberlarians, Trematoda, cestoidea,
describe the Tuberlarians
Nearly all free living, predators or scavengers, not parasitic, move by gliding along layer of mucus, use muscles to swim in water, blind gastrovascular cavity
dESCRIBE THE TREMATODA
parasites, suckers attach to host. Live in different hosts over lifecycle, alternating sexual and asexual stages