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Invertebrate Taxon, Key Adaptations Within and Relationships Between, The…
Invertebrate Taxon
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Coelomate
Phylum Mollusca
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muscular foot for moving, anchoring, and eating
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Phylum Cnidaria
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nematocysts - microscopic, harpoon-like stinging structures usually on tentacles (pierce the prey and release a paralyzing toxin)
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- Medusa (free-swimming) - mouth and tentacles face downward
- Polyps (attached) - mouth and tentacles face upwards
Four Classes
- Hydrozoa
- Scyphozoa
- Anthozoa
- Cubozoa
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An internal cavity, in which water through gets circulated.
Flagellated, current-producing cells that line along the spongocoel.
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A large excurrent pore, through which water escapes.
Simplest filter feeders, live in water with sufficient nutrients.
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Lack tissues, organs, muscles and nerves.
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Cells divide fast, grows large and has a long life span.
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Symmetry: Anterior, Dorsal, Ventral, Posterior
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