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18 Cards in this Set
- Front
- Back
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Phylum |
Platyhelminthes |
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Classes: |
1)Turbellaria [Planaria] 2)Trematoda [Flukes] 3)Cestoda [Tapeworms] |
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Germ layers |
all 3 Endoderm+Ectoderm+Mesoderm |
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Body cavity |
None |
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Symmetry |
Bilateral |
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Segmentation |
No |
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Cephalization |
Yessssssss 1st animal with definite head regions |
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Nervous System |
Nerves with centralized collection of nerves: Brains |
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Digestive System |
Feeds through pharynx which leads to a highly branched gut where digestion occurs
Incomplete Digestive System |
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Gas Exchange |
Diffusion across the skin |
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Circulation |
None;Movement by diffusion and cell to cell contact |
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Excretion |
Have flame cells which remove excess water |
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Reproduction |
Proglata + Scollex = where eggs are matured and fertilized
Fertilized egg= gravit |
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General Characteristics for Planarian |
Flat due to the germ layers touching each other |
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Tapeworm |
Endoparasite |
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Planarian |
Free-Living |
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Flukes |
Endoparasites |
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Auricles |
Chemical Sensors |
