Flatworms Flashcards
1
Q
What are the general characteristics of the phylum Platyhelminthes?
A
- bilateral symmetry
- triploblastic
- cephalization
- acoelomate (NO coelom)
- gut with ONE opening eg. blind gut
- uses protonephridia for excretion and osmoregulation
2
Q
What are the characteristics of class Turbelleria?
A
- free living flatworms
- predators OR scavengers
- blind gut with eversible proboscis/pharynx (feeding mechanism)
- NO circulatory system
- hermaphroditic
- bilateral symmetry
- has protonephridia for excretion and osmoregulation
- can regenerate
3
Q
What are the characteristics of class Trematoda?
A
- flukes eg. can be found in liver
- single mouth
- bilobed digestive tract
- body is UNSEGMENTED
4
Q
What are the characteristics of class Cestoda?
A
- anterior hooked scolex to anchor to intestines
- division of body into proglottids, which are the reproductive parts
- absence of digestive tract since they absorb into environment
