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Cnidaria - Coggle Diagram
Cnidaria
Anthozoa
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the medusoid form is completely absent from the life cycle; instead the polyp body plan is adopted for most of the life cycle
Sea anemones (solitary), hard and soft corals (colonial), sea fans, sea pens (colonial)
types
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hard corals
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This group contains the organisms with the longest lives (each polyp ~ few years; each colony:~30-40 years); they also form large colonies
sea pen
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They have a stem called Rachis, supporting the polyps
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Scyphozoa
types
compass jellyfish
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32 lobes: 4 lobes with tentacles passing food to the mouth; 24 tentacles with nematocysts to capture prey
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In some, the polyp phase is also part of the life cycle
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hydrozoan
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types
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Tubularia (polyp
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Prey of nudibranchs (seaslugs) : in some areas one might find only the stalks because the sea slugs eat the tentacles
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general
is morphologically diverse: it includes organisms such a jellyfish, corals and gorgonians
radial symmetry: If we cut the organism by planes as in this figure we always get the same morphology at each side of the plane.
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