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Cnidarians Jellies, Anemones, Corals

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Presentation on theme: "Cnidarians Jellies, Anemones, Corals"— Presentation transcript:

1 Cnidarians Jellies, Anemones, Corals
Dimorphism: Two body shapes during life cycle. (Polyp & Medusa) Gastrovascular cavity Primitive nerve net Two distinct tissue layers: Epidermis & Gastrodermis Cnidocyte (Stinging cells) Radial Symmetry

2 Life cycle Reproduction :
Most cnidarians reproduce both sexually and asexually.

3 Classes of Cnidaria Scyphozoa (Cup Animals) Hydrozoa (Serpent Animals)
Anthozoa (Flower Animals)

4 Scyphozoa Scyphozoa True jellies
Medusa form during most of its life cycle. Lions Mane is the most common in L.I.S. Butter fish lives in its tentacles.

5 Sea Wasp Known as box jellyfish Most powerful venom in the world
Lives in Australia Can be up to 60 meters in length

6 Hydrozoa Both body plans: polyp and medusa
Reproduce sexually as medusas. Example: Portuguese Man Of War

7 Anthozoa They are individual or colonies of polyps found in coastal waters. No swimming medusa stage. Examples: Sea anemones,Hard corals, sea fans

8 Sea fans

9 Hard corals

10 Phylum: Ctenophora Ctenophores Common name: Comb jellies
Contain eight rows of comb plates made of cilia used for locomotion. Bioluminescent No stinging cells They feed on plankton

11 Comb Jellies


13 Candiru

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