Zoology Unit 5: Complex Invertebrates

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Across
  1. 1. small hairs or appendages in annelids
  2. 4. muscular structure mollusks use for locomotion
  3. 6. sieve plate where water enters sea star
  4. 7. Echinoderm class that contains sea stars
  5. 8. annelid class with bristle worms
  6. 10. mollusk class that contains squid and octopus
  7. 12. Echinoderm class that contains sea urchins
  8. 15. hard layer in mollusks that secrete the shell
  9. 18. starfish symmetry
  10. 19. echinoderm class that contains sea cucumbers
  11. 21. type of annelid circulatory system
  12. 22. rasping toothy tongue found in many mollusks
Down
  1. 2. what starfish use to move and grasp (TWO WORDS)
  2. 3. Annelids are known as ______ worms
  3. 5. annelid class with earthworms
  4. 9. calcerous plates in echinoderms
  5. 11. mollusk class that contains clams and oysters
  6. 13. bulb-like structure attached to tube feet in sea stars
  7. 14. mollusk class that contains snails and slugs
  8. 16. mollusk symmetry
  9. 17. type of body plan with repeating segments found in annelids
  10. 20. annelid class with leeches