echinoderms. spiny skin spiny skin radial symmetry radial symmetry water vascular system water...
Post on 27-Mar-2015
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Echinoderms Slide 2 Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system Slide 3 Form and Function Water vascular- respiration, circulation, movement. Water vascular- respiration, circulation, movement. Madreporite- connects the ring canal to the outside. Madreporite- connects the ring canal to the outside. Slide 4 Slide 5 Tube feet- movement. Tube feet- movement. Feeding- sea stars push out stomach and enzymes break down shells. Feeding- sea stars push out stomach and enzymes break down shells. Excretion- cellular through tube feet(ammonia), solid through anus. Excretion- cellular through tube feet(ammonia), solid through anus. External fert. External fert. Slide 6 Groups of Echinoderms Slide 7 Sea Urchins and Sand Dollars Large solid plates Large solid plates Most eat algae Most eat algae Slide 8 Slide 9 Slide 10 Brittle Stars Found on coral reefs Found on coral reefs Can shed an arm to escape Can shed an arm to escape Filter feeders Filter feeders Slide 11 Slide 12 Sea Cucumbers Moving pickles Moving pickles Detritus feeders Detritus feeders Slide 13 Slide 13 Slide 14 Slide 15 Slide 16 Sea Stars Most are carnivores Most are carnivores Eat bivalves Eat bivalves Can repair themselves Can repair themselves Slide 17 Slide 18 Slide 19 Sea Lilies and Feather Stars Filter feeders Filter feeders Live in the tropics Live in the tropics Slide 20 Feather Star (Note the depth)