pz reptiles


 Reptiles

Across 2. habitat where most reptiles live 4. upper shell of a turtle 7. extinct reptiles of the Mesozoic era 11. membrane that stores wastes in an egg 13. tiny air sacs in the lungs for gas exchange 16. type of circulation in reptiles 18. number of heart chambers in crocodiles & alligators 20. order containing lizards & snakes 23. snake that injects poison 24. reptiles that give live bird 25. snakes or vipers with heat sensitive areas on their head 28. organisms like reptiles whose body temperature is controlled by the environment Down 1. order containing alligators 3. "white" of an egg containing water 7 protein 5. order containing tuataras 6. organs of respiration in reptiles 8. lower shell of a turtle 9. food inside an egg 10. reptiles who retain their shelled eggs inside their bodies until they hatch 12. snakes that kill prey by squeezing them to death 14. protein making the skin of reptiles watertight 15. cover the body of reptiles 17. egg laying reptile 19. membrane surrounding the cushioning fluid in an egg 20. wall of tissue in snakes & turtles partially dividing the lower heart chamber 21. type of shelled egg in reptiles 22. sense organ in the roof of reptile’s mouth 26. order for turtles 27. blood being returned to the heart