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12 Cards in this Set

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  • Back
has a tube-shaped body with a mouth surrounded by tentacles
Polyp
has an umbrella-shaped body, called a bell, with tentacles that hang down. Its mouth is on the underside of the bell.
Medusa
a capsule that contains a coiled, thredlike tube.
nematocyst
the inner cell layer of cnidarians surrounds a space called a
gastrovascular cavity
conducts impulses to and from all parts of the body
Nerve net
what are the four types of Cnidarians?
Scyphozoa, hydrozoa, anthozoa, cubozoa
what are the two groups of Hydrozoans?
hydroids and siphonophores
(Hydrozoans form colonies)
marine animals. formed by budding. attach to things like shells
hydroids
floating colonies on oceans surface
siphonophores
what are Scyphozoans?
Jellyfish
what is the dominant stage in the Scyphozoan class?
Medusa
Most Anthozoans build what?
coral reefs