Jack, Jacob, Kylie Period 2

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Presentation transcript:

Jack, Jacob, Kylie Period 2 ECHINODERMATA Jack, Jacob, Kylie Period 2

Symmetry Radial Symmetry

Feeding Animals can be: -Filter Feeders -Carnivores -Detritivores -Herbivores -Omnivores

Circulation Open circulatory system Cilia circulating fluids through each arm A network of of fluid-filled nerve networks Function in gas exchanges

Excretion Water vascular systems Anus Mouth

Response Nerve ring surrounding their mouth Nerve extends through a series of networks Networks go towards each of the body’s regions

Movement Ossified skeletons Starfish use their feet or limbs to move Sea Cucumbers use their spines

Reproduction Both asexually or sexually Fertilization of eggs by spermatazoa

Respiration Poorly developed Gills and tube feet Take in oxygen and pass out carbon dioxide

Classes/ Examples Crinoidea- (Sea lillies) Asteroidea- (Starfish) Ophiaroidea- (Brittle stars & Snake Stars) Echinoidea (Seas Urchins & Sand dollars) Itolothuroidea (Sea Cucumbers)