Organism(s) Sea Urchin, Brittle Stars, Sea Cucumbers, and Sea Stars

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Presentation transcript:

Organism(s) Sea Urchin, Brittle Stars, Sea Cucumbers, and Sea Stars Phylum: Echinoderms

Symmetry:_______________ Body Plan: Endoskeleton (what does that mean?) Spiny Skin Lack Body Segments Coelomate -have a fluid filled body cavity called a coelom with a complete lining called peritoneum derived from mesoderm (one of the three primary tissue layers).

Feeding: Water Vascular System Tube Feet The water vascular system is a hydraulic system used by echinoderms, such as sea stars and sea urchins, for locomotion, food and waste transportation, and respiration. The system is composed of canals connecting numerous tube feet.

Respiration/Circulation/Excretion 1 opening Ring Canal Tube Feet-Gas Exchange

Response Marine Environment

Movement Tube Feet

Reproduction Sexual Can regenerate Video