Ch 8 Marine Science Crossword Puzzle

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Across
  1. 3. type of digestive tract Planaria have
  2. 5. nerve cell clusters
  3. 7. 1 pair of coiled tubes in each segment of worms
  4. 10. sharp, sticky extension
  5. 11. lives in/on living host
  6. 13. hairlike bristles
  7. 15. worm that lives in intestines of fish
  8. 16. largest free living worm in the ocean
  9. 17. tapeworm doesn't have this system
  10. 20. most numerous of all worms in the sea
  11. 21. fluid that separates digestive tract from skin
  12. 25. what fluke larva can cause
Down
  1. 1. what Phylum Annelid means
  2. 2. what roundworms eat
  3. 4. class meaning "many bristles"
  4. 6. what Phylum Platyhelminthes means
  5. 8. what keeps skin of segmented worms moist
  6. 9. middle cell layer of flatworms
  7. 12. outer cell layer of flatworms
  8. 14. general movement of marine worms
  9. 18. type of circulatory system ribbon worms have
  10. 19. inner cell layer of flatworms
  11. 22. general size of marine worms
  12. 23. larval form of worms
  13. 24. type of symmetry worms have