Echinoderm Review

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Across
  1. 4. Type of feeding used by crinoids
  2. 7. Type of respiration not involving gills or lungs
  3. 8. Phylum that includes sea stars, crinoids and sea cucumbers
  4. 10. The formation of a head (echinoderms don't have this)
  5. 12. Sea stars belong to this class
  6. 13. How many stomachs does a sea star have?
  7. 15. Sea urchins use their _____ to move
  8. 16. Type of feeding using by sea stars
  9. 17. Sea ______ have large internal plates enclosing their organs
  10. 19. _______ stars will shed an arm if attacked
  11. 20. Unlike echinoderms, mollusk respire using _____.
  12. 21. Cnidaians have this kind of symmetry
  13. 22. Echinoderms have this kind of symmetry (5 parts)
  14. 23. Brittle stars belong to this class
  15. 24. science word for skin
  16. 27. Most crinoids are ______ (they don't move)
  17. 28. Echinoderms use a water ______ system to perform all their life functions
  18. 30. Water comes into an echinoderm through this opening (aka sieve plate)
Down
  1. 1. Sea ______ can vomit up their intestines if threatened
  2. 2. Type of movement used by sea cucumbers using their body muscles
  3. 3. Type of fertilization used by echinoderms
  4. 5. Sea stars move and sense the world using their ____ feet
  5. 6. Type of feeding used by sea cucumbers (decomposers)
  6. 9. Sea cucumbers belong to this class
  7. 11. Sea urchins and Sand Dollars belong to this class
  8. 14. Feather stars and Sea Lillies belong to this class
  9. 18. The ____ canal connects the madreporite to the ring canal
  10. 19. Mollusks have this kind of symmetry
  11. 25. Echinoderms can ______ lost body parts
  12. 26. Sea ______ can continue to regenerate lost body parts if central ring is present
  13. 29. the casting off of body parts in self defence