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Which superphylum does Phylum Platyhelminthes belong to?
Superphylum Lophotrochozoa
What kind of animals belong to Phylum Platyhelminthes?
Flatworms, flukes, and tapeworms
What kind of environment do flatworms live in?
Marine
Describe the body plan of flatworms.
Bilaterally symmetrical
Triploblastic- 3 germ layers
Acoelomate- ONLY phylum without coelom
What does tissue cooperation result in? Give examples.
Sense organs:
Ocelli- eye spots
Auricle- "ears"
Describe flatworms' nervous mechanism.
Cerebral ganglia (nerve bodies) and double ventral nerve cords
Describe flatworms' digestive mechanism. Is it complete or incomplete?
Gastrovascular cavity- incomplete
What is the pharynx?
The mouth/anus tube that leads to the gastrovascular cavity
Describe flatworms' respiratory mechanism.
Diffusion
Describe flatworms' circulatory mechanism.
None
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