Across
- 4. small calcareous plates
- 7. symmetry; animal has no front or back
- 8. runs from mouth to tips of arms
- 10. coiled digestive system
- 11. part of the nerve going down the arms
- 14. mouth side of the specimen
- 15. symmetry of larva
- 16. skin gills
- 17. tube feet
- 19. sea cucumbers
- 20. serves in movement&respiration
Down
- 1. brittle stars
- 2. pincer like; at the base of spines
- 3. stomochord
- 5. sea stars
- 6. flower like class
- 8. not mouth side of the specimen
- 9. digestive glands
- 12. sea urchins
- 13. leads to the water vascular system
- 18. symmetry of adult echinoderms