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7 Cards in this Set
- Front
- Back
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What are the 4 classes of Cnidarians? |
Hydrozoa, Schypozoa, Cubozoa, Authozoa |
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Identifying characteristics of Cnidarians |
Non-coelmates, radial symmetry, tentacles (transport + catching food), nematocysts (stinging cells), gvc, primitive nervous system, hermaphroditic, marine habitat, motile (medusa) stage and sessile (polyp) stage |
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What is the gvc responsible for? |
digestion, circulation, respiration, excretion |
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What are the two body types of Cnidarians? |
1. Polyp - sessile, tentacles face up, asexual 2. Medusa - motile, tentacles face down, sexual |
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Nematocysts |
Composed of cnidocytes, which are made of cnidocysts, which produce toxins |
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What happens when a trigger is stimulated? |
Releases a barbed needle that injects toxins |
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What is the ecological importance of Phylum Cnidaria? |
- filter and clean water - symbiotic relationships (ex clownfish) - sensitive to pollution because they filter water |
