Unit 5: Echinoderms and Mollusks

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Across
  1. 7. mollusca class that includes squid and octopus
  2. 8. bulb like structures that extend the tube feet
  3. 11. canals that extend into sea star arms
  4. 12. shell of sea urchins and sand dollars
  5. 13. sea urchin class
  6. 15. sea star reproductive organs
  7. 16. mollusca class that includes clams and oysters
  8. 17. sea star class
Down
  1. 1. tissue layer in mollusks that protects organs and sometime secretes a shell
  2. 2. sea cucumber class
  3. 3. how starfish can grow new arms and sometimes reproduce
  4. 4. opening where water is drawn into sea star
  5. 5. muscular structure mollusks use for locomotion
  6. 6. hard rasping tongue some mollusks use to chew
  7. 9. one of the sea star's favorite meals
  8. 10. mollusca class that includes snails and slugs
  9. 14. bony plate under sea star skin