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Cnidarians

Introduces organisms such as the jellyfish, corals, and sea anemones.

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Cnidarians

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Vocabulary

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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