Phylum Platyhelminthes Flashcards
The Phylum Platyhelminthes consists of
Flatworms / Tapeworms
How are Platyhelminthes?
Soft-bodied invertebrates with flat bodies
Do Platyhelminthes have a coelom?
No, they are Acoelomates
How is sex displayed?
They are Hermaphrodites, so there is no dimorphism
What features of Platyhelminthes have?
Hooks and suckers
Platyhelminthes have flame cells which allow for
Excretion + osmoregulation
How is the symmetry displayed by Platyhelminthes?
Bilateral
How many tissues do Platyhelminthes have?
Three, making them triploblasts
Flatworms and other Platyhelminthes are mostly
Parasitic
How is the digestive system of the Platyhelminthes?
It is incomplete
What makes the digestive system incomplete?
- Anus is absent
- No true stomach structure
The digestive system contains
A crop + gizzard
How are the Respiratory and circulatory systems?
Absent
How do Platyhelminthes respire?
Via diffusion
How is the level of organization for Platyhelminthes?
Organ-system level
