1. Echinoderm review

2. On the following slides with pictures, try to: name the organism Give the Class for the organism State the number of species in the Class The organism’s environment (be specific) Any other facts about the class

3. Class Crinoidea Feather Star 625 living species Stays attached to rocks, coral most of its life (sessile)

4. Class Crinoidea Sea Lily

5. Class Echinoidea Sea Urchin 950 living species Very brightly colored some contain toxins

6. Class Echinoidea Sand Dollar

7. Class Holothuroidea Sea Cucumber 1150 living species Some crawl, others found beneath rocks, other burrow Elongated bodies, bodies are soft

8. Class Ophiuroidea Brittle Star 2000 living species Found in ocean bottoms (benthic), marine areas Very secretive animals where little to no light penetrates

9. Class Asteroidea Starfish 1500 living species Brightly colored Many are carnivorous

10. On this slide give info about the listed system : Digestive Complete system (mouth to anus) Respiratory Uses respiratory trees or dermal branchiae Skeletal Has an endoskeleton of calcareous ossicles Reproduction Most sexually reproduce, separate sexes, external fertilization Some can regenerate (which is asexual) Excretory No true excretory organs

11. Name the structures. Pyloric stomach Madreporite (sieve plate) anus Digestive glands Ring canal gonads Radial canal ampulla Tube feet List the structures in order that water moves through the water vascular system. 1.Madreporite 2.Stone canal 3.Ring canal 4.Radial canal 5.Ampulla 6.Tube feet