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Published byAlexandra Forbes
Modified over 8 years ago
Cnidarians Jellies, Anemones, CoralsDimorphism: Two body shapes during life cycle. (Polyp & Medusa) Gastrovascular cavity Primitive nerve net Two distinct tissue layers: Epidermis & Gastrodermis Cnidocyte (Stinging cells) Radial Symmetry
Life cycle Reproduction :Most cnidarians reproduce both sexually and asexually.
Classes of Cnidaria Scyphozoa (Cup Animals) Hydrozoa (Serpent Animals)Anthozoa (Flower Animals)
Scyphozoa Scyphozoa True jelliesMedusa form during most of its life cycle. Lions Mane is the most common in L.I.S. Butter fish lives in its tentacles.
Sea Wasp Known as box jellyfish Most powerful venom in the worldLives in Australia Can be up to 60 meters in length
Hydrozoa Both body plans: polyp and medusaReproduce sexually as medusas. Example: Portuguese Man Of War
Anthozoa They are individual or colonies of polyps found in coastal waters. No swimming medusa stage. Examples: Sea anemones,Hard corals, sea fans
Phylum: Ctenophora Ctenophores Common name: Comb jelliesContain eight rows of comb plates made of cilia used for locomotion. Bioluminescent No stinging cells They feed on plankton
All contain nematocysts-stinging structures
Kingdom Animalia Phylum Cnidaria.
Today’s Objectives: 3.4 Describe characteristics of this phylum
Sponges Cnidarians Ctenophores
Phylum Cnidaria Anemones, Corals, Hydroids and Jellies
Hydra, Jellyfish, Coral, & Sea Anemones
Corals, Anemones, Sea Fans, and Jellyfish - Aquatic Stinging Nettles
Simple InvertebratesSection 2 CH 27 Phylum Cnidaria Jelly-fish, coral, sea anemones, and hydras.
1 Cnidarians & Ctenophorans 1copyright cmassengale.
35-2 Cnidaria and Ctenophora
Cnidaria & Ctenophora. Cnidaria Radially symmetrical Tentacles contain nematocysts (stinging cells)
Cnidarians (Coelenterates). Phylum Cnidaria (Coelenterata) Class Hydrozoa = Hydra POLYP body form = “vase shaped” ; sessile Most live in colonies. 1 of.
Sponges, Cnidarians and Ctenophores
Phylum Porifera. Means “pore-bearer” Asymmetry…no definite shape Sessile as adults Includes sponges…not very complex (no tissues/organs/systems) Life.
Jellyfish, Corals, and Sea Anemones
Phylum Cnidaria stinging-celled animals Jellyfishes, corals, anemones Radial symmetry Two tissue layers with inner mesoglea Primitive nerve net but no.
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