Platyhelminthes Flashcards
1
Q
What are the Platyhelminthes?
A
Flatworms
2
Q
What are the general features?
A
Simple body plan, no coelom May have lost coelom in evolution Triploblastic Cephelization - active movement no gas exchange or circulatory organs
3
Q
What are the classes?
A
Tuberlarians, Trematoda, cestoidea,
4
Q
describe the Tuberlarians
A
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
5
Q
dESCRIBE THE TREMATODA
A
parasites, suckers attach to host. Live in different hosts over lifecycle, alternating sexual and asexual stages
6
Q
Describe the cestoidea
A
Parasites of vertebrates, scolex attaches to host, more than one host
