1 / 13

Cnidarians

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. Life cycle. Reproduction :

mikel
Download Presentation

Cnidarians

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

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

  12. Candiru

More Related