Biology II: Fishes

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Across
  1. 3. thin walled vessels
  2. 5. round mouth, ex. hagfish, lamprey
  3. 7. when fertilization occurs outside the female
  4. 8. internal respiratory organs where gas exchange occurs between blood and air
  5. 10. carry blood to the heart
  6. 12. external respiratory organs where gas exchange occurs between blood and water
  7. 13. integrates sensory and other information from the brain
  8. 15. have hair and nurse young with milk
  9. 16. have feathers and hollow bones
  10. 17. spiny fish
  11. 19. opening on the head where water enters
  12. 22. receives information from visual, auditory and lateral line systems (2 words)
  13. 23. nerves that connect the sense organs to the brain
  14. 24. skeletal elements that support the pharynx that became jaws (2 words)
  15. 25. coordinates movement
Down
  1. 1. process smell (2 words)
  2. 2. lay eggs in water and aquatic larval stage
  3. 4. carry blood away from the heart
  4. 6. controls some body function, relay station for stimuli (2 words)
  5. 9. cartilage fish, ex. shark, skate, ray
  6. 11. when fertilization occurs inside the female
  7. 14. lay eggs on land and dry, scaly skin
  8. 18. jawless fish, ex. hagfish, lamprey
  9. 20. nerves that connect the spinal cord with the body
  10. 21. bony fish, ex. bass, bluegill, goldfish