1 / 14

Cnidarians Verse Porifera

Cnidarians Verse Porifera. Megan Finnerty Biology 5/6. Types of Organisms. Porifera Sponges. Cnidarians Jellyfish Hydra Sea Anemones Coral. Cnidarians Characteristics. Symmetrical Multicellular , few tissues, some organelles Contains internal cavity and a mouth

vanna
Download Presentation

Cnidarians Verse Porifera

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 Verse Porifera Megan Finnerty Biology 5/6

  2. Types of Organisms • Porifera • Sponges • Cnidarians • Jellyfish • Hydra • Sea Anemones • Coral

  3. Cnidarians Characteristics • Symmetrical • Multicellular, few tissues, some organelles • Contains internal cavity and a mouth • Net like nervous system • Aquatic environments • Minimal skeleton, of chifton or calcium carbonate

  4. Porifera Characteristics • No definite symmetry. • Body multicultural, few tissues, no organs. • Has no nervous system. • Lives in aquatic areas. • All are filter feeders. • Often have skeleton of spicules.

  5. Cnidarians Feeding Paralyzes prey with tentacles and then the food falls into the mouth. It is then digested in the gastrovascular cavity http://universe-review.ca/R10-33-anatomy.htm

  6. Porifera Feeding Takes the Incoming water and filters it. Food particles are then trapped by the choanocytes. Food is digested and then passed along to the archaeocyte cells. http://www.biologie.uni-hamburg.de/b-online/library/onlinebio/BioBookDiversity_7.html

  7. Respiration, Circulation and Excretion • Porifera • As the water moves through the body cavity, oxygen is dissolved. • Waste is diffused. • Cnidarians • Following the digestion, nutrients are transported by diffusion. • Waste is through the body walls by diffusion.

  8. Cnidarians Response Uses the nerve net to detect stimuli http://biodidac.bio.uottawa.ca/thumbnails/catquery.htm?Kingdom=Animalia&Phylum=Cnidaria&category=diagbw

  9. Porifera Response No nervous system Can produce toxins instead http://mymarinebiologyhome.blogspot.com/2007/09/shape-of-life-090807.html

  10. Cnidarians Movement • Uses water in the gastrovascular cavity and hydrostatic skeleton • Uses jet propulsion to move OR http://funscubadiver.com/gallery/bonaire-giant-sea-anemone.htm http://lifestyle.iloveindia.com/lounge/jellyfish-facts-5755.html

  11. Porifera Movement • Are Sessile (live adult life stationary) • As a larva, it is carried by water currents until stationary larva http://www.biology.ualberta.ca/CMD/home.htm

  12. Cnidarians Reproduction Both Sexually and Asexually reproduction Polyps can either reproduce asexually by budding and creating another polyp or producing a medusa The Medusa(male) releases the sperm in open water and fertilizes the egg http://universe-review.ca/R10-33-anatomy.htm

  13. Porifera Reproduction Both sexual and asexual reproduction Sperm released into water currents, brought to female for internal fertilization Asexual is by budding or gemmules http://authors.ck12.org/wiki/index.php/Simple_Invertebrates:_Sponges,_Cnidarians,_and_Worms

  14. Comparisons • Both are invertebrate • Both are protostomes • Poriferia have no symmetry while Cnidarians have radial symmetry

More Related