Echinoderms. I.Deuterostomes A.Radial clevage B.Enterocoelous coelom formation C.Determiant clevage D.Blastopore becomes anus.

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Presentation on theme: "Echinoderms. I.Deuterostomes A.Radial clevage B.Enterocoelous coelom formation C.Determiant clevage D.Blastopore becomes anus."— Presentation transcript:

1 Echinoderms

2 I.Deuterostomes A.Radial clevage B.Enterocoelous coelom formation C.Determiant clevage D.Blastopore becomes anus

3 II.Echinoderm classes A.Asteroidea-starfish B.Ophiduroidea-brittlestars C.Echinoidea-sea urchins D.Holothuroidea-sea cucumbers E.Crinoidea-featherstars

4 III.Water vascular system A.Structure B.Function

5 IV.Digestive System A.oral vs aboral surface B.cardiac vs pyloric stomach C.hepatic ceca D.intestine and anus

6 Starfish feeding on a mussel

7 V.Reproductive system A.Different sexes B.Reproductive products released into open water C.Regeneration

8 VI.Ray cross section 1. Coelom 2. Calcareous plate 3. Dermal branchiae 4. Hepatic ceca 5. Spine 6. Radial canal 7. Pedicellariae 8. Radial nerve 9. Tube foot 10.Sucker

9 Pedicellariae

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