Echinoderms

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