Vocab Crossword

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Across
  1. 2. Reptiles inhale by contracting the rib cage
  2. 4. This keeps reptiles from drying out
  3. 6. Lives in water
  4. 9. Reptiles are __
  5. 12. An amniotic egg is covered with a protective
  6. 13. Birds have a ___ chambered heart
  7. 16. Reptiles have legs under their bodies instead of their sides
  8. 17. Birds have __ fertilization
  9. 20. Have webbed feet to aid in moving through the water
  10. 21. Only two species now exist
  11. 23. Live on land
  12. 25. Some reptiles keep eggs in their bodies until they hatch
  13. 26. A membrane that surrounds a developing embryo
  14. 27. Are nocturnal, with large eyes and sharp talons on their feet
  15. 28. Optic lobes and cerebellum of reptiles are larger than those of amphibians
  16. 29. Birds have a __ or bill instead of teeth
  17. 30. Birds have __ instead of arms
Down
  1. 1. Has a long v-shaped snout
  2. 3. Birds are __ blooded
  3. 5. Reptiles have __ fertilization
  4. 7. Helps to coordinate movement & balance during flight
  5. 8. Some reptiles are herbivores, and some are carnivores
  6. 10. The outermost membrane off the egg is the
  7. 11. Birds are __
  8. 14. Have jointed jaws that enable them to eat large prey
  9. 15. Have feet adapted for perching on in stems and twigs
  10. 18. Has a wide u-shaped snout
  11. 19. Amphibians have __ fertilization
  12. 22. Have vertebrae and ribs fused to a carapace
  13. 24. Use their wings as flippers to swim