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9.3: Cnidarians

Difficulty Level: At Grade Created by: CK-12
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Vocabulary

TermDefinition
cnidarians Invertebrate animals including jellyfish and corals; they are characterized by radial symmetry and stinging cells called nematocysts.
gastrovascular cavity Internal space that is the site of digestion and distribution of nutrients.
medusa Bell-shaped body plan of some Cnidarians with mouth and tentacles facing downward.
nematocyst Stinging cells characteristic of the Cnidarians.
polyp Cup-shaped body plan of some Cnidarians with mouth and tentacles facing upward.

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Description
Difficulty Level:
At Grade
Grades:
7 , 8
Date Created:
Nov 29, 2012
Last Modified:
Aug 30, 2016
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SCI.LSC.821.2.L.1