1. Echinoderms and Invertebrate Chordates
Bio II Honors
Rupp

2. Echinodermata Includes

3. Characteristics Radial symmetry Bilaterally symmetrical larva
Deuterostomes—do you remember what this means?
Endoskeleton
Water-vascualr system
Tube feet

4. Classification
Crinoidea
Sea lilies and feather stars

5. Classification
Ophiuroidea
Basket stars and brittle stars

6. Classification
Echinoidea
Sea urchins and sand dollars

7. Classification
Holothuroidea
Sea cucumbers

8. Classification
Asteroidea
Starfish

9. Structure and Function—External Anatomy
Tube feet
Oral versus aboral
Pedicellariae

10. Structure and Function—Water Vascular System

11. Structure and Function—Feeding and Digestion

12. Structure and Function—General Body Systems
No circulatory, excretory, or respiratory
Gas exchange through tube feet
Nerve ring and net

13. Structure and Function—Reproduction and Development
Separate sexes
External fertilization
Larva-aka-bipinnaria

14. Invertebrate Chordate Characteristics
Notochord
Dorsal nerve cord
Pharygeal gill pouches
Postanal tail

15. Chordate Subphyla
Vertebrata
95% of all chordate species

16. Chordate Subphyla
Cephalochordata
Lancelets

17. Chordate Subphyla
Urochordata
Tunicates
Commonly known as sea squirts