Phylum Cnidaria

Card Set Information

Author:
Siobhan
ID:
120072
Filename:
Phylum Cnidaria
Updated:
2011-12-01 12:03:53
Tags:
Phylum Cnidaria
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Description:
Phylum Cnidaria
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  1. habitat
    aquatic, mostly marine
  2. first group of animals to achieve...
    tissue level of organization
  3. tissue
    • embryonic tissue
    • ectoderm (outer skin)
    • endoderm (inner skin)
  4. feeding
    • predatory
    • use cnidocytes (venom containing cells) to capture prey.
  5. 2 body formss
    Polyp- attaches to a surface and has tentacles pointing upward

    medusa- jellyfish, free swimming, tentacles pointing downward
  6. Cnidocyte
    • venom containing cells capture prey
    • use stinging filament nematocyst which shoots out from the cell at the slightest touch, to inject venom into prey

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