Cnidarians By Lauren Lorenzo Body Symmetry Radial Symmetry
Cnidarians By Lauren & Lorenzo
Body Symmetry § Radial Symmetry
Sessile Poly-form Ex: Coral Locomotion Medusaform Hydrostatic Skeleton Ex: Jellyfish
§ Present § Nerve Net Nervous System/ Response Sea Anemone
§ Two-way digestion § Mouth and anus § Gastrovascular Cavity Digestiveexcret ory System § Diffusion § Osmosis
§ Diffusion § Osmosis Circulatory System Jellyfish
§ No respiratory organs § They use body cells to absorb O 2 and expel CO 2 (Osmosis) Respiration
§ In medusae, mesoglea comprises the bulk of the animal and forms a resilient skeleton § In polyps, the water-filled coelenteron acts as a hydrostatic skeleton Skeletal system Muscles in cnidarians are extensions of the bases of ectodermal and endodermal cells
Sexual and Asexual Reproduction Asexual: Creating buds
HYDROZOA Examples: Hydra, fire coral -Polyp form shape -Stinging cells (Cnidocytes) -Exoskeleton of Chytin Cnidarians' classes SCYPHOZOA Examples: Jellies -Nervous system (net cells) -Their body is 98% water -Use propulsion for moving ANTHOZOA -Carnivores -They form colonials Examples: Corals, Sea Anemones, Sea fans, Sea pens -Reproduction trough larvae
Portuguese "Man of war" Cnidarians' photos Sea Anemone Corals Sea Fans
A dish based on jellyfish § Large blooms (group of jellyfishes) can feature over 100000 jellyfish. § Jellyfish use their tentacles to sting. Some Fun facts about Cnidarians species, such as the box jellyfish, can kill a human being. § Cnidarians are carnivores and use their tentacles to feed on plankton and other small organisms in the water § Jellyfish are consumed in several Asian and Box jellyfish Southeast Asian countries. In 2001, it was reported that Japan had annually imported between 5, 400 and 10, 000 tons of edible jellyfish
Jellyfish
§ “The Best Jellyfish Aquarium for Relaxation - Sleep Relax Meditation Music - 3 Hours - Screensaver. ” You. Tube, 10 July 2017, www. youtube. com/watch? v=Smfb. P 17 xyq. Q § Fautin, Daphne Gail, and Cadet H. Hand. Citations “Cnidarian. ” Encyclopædia Britannica, Inc. , 17 Oct. 2017, www. britannica. com/animal/cnidarian. § https: //study. com/academy/lesson/cnidarians-circulatorysystem. html § https: //www. factmonster. com/dk/encyclopedia/science/cni darians
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