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Corals

Corals. Cnidarian - polyps that usually live in colonies - produces hard, stoney , skeleton around its soft body . Obtain food. Sting cells disable prey Tentacles pull prey into mouth Prey digested in stomach

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Corals

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  1. Corals Cnidarian - polyps that usually live in colonies - produces hard, stoney, skeleton around its soft body

  2. Obtain food • Sting cells disable prey • Tentacles pull prey into mouth • Prey digested in stomach • Food passed throughout organism through diffusion, not through circulatory system

  3. Corals eating • http://www.youtube.com/watch?v=Rqhp_RtP44Q&feature=related • http://www.youtube.com/watch?v=sTtJlyBcSv0

  4. Stinging cells

  5. Movement • Larva moves to find solid surface to which it attaches • Moves in reaction to prey

  6. Symbiotic relations • Zooxanthellae – photosynthetic bacteria that lives with the polyps tissue; Changes carbon dioxide and water into oxygen and carbohydrates. Coral uses both and gives off carbon dioxide.

  7. Genders • Gender – some corals contain both sexes, some corals are either male or female • Some colonies are both genders, some are only one

  8. Reproduction • Sexual – internal and external fertilization

  9. Reproduction • Sexual – internal and external fertilization • Sychronous spawning: temperature, tides • Asexual – Budding, part of parent pinches off to form new organism

  10. http://www.youtube.com/watch?v=06BPlLATtgc • http://www.youtube.com/watch?v=eRZczb96uDo&feature=related

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