Reptiles

1. Reptiles

3. Classification of Reptiles • Kingdom Animalia • Phylum Chordata • Subphylum Vertebrata • Class Reptilia

4. Characteristics of Reptiles • Strong, bony skeletons • Feet with claws • Dry, scaly skin • Amniote eggs

5. Characteristics of Reptiles • Ectothermic-cold blooded • Respiration with lungs • Ventricle partly divided • Internal fertilization

6. The Amniote Egg • Contains a water and food supply for the developing embryo and can be laid on land. • Must be fertilized internally, has a shell.

8. Structure Amnion Yolk sac Allantois Chorion Albumin Function Provides a watery environment for the embryo Contains the food for the embryo Stores waste Allows oxygen to enter and carbon dioxide to leave Egg white The Amniote Egg

9. Orders of Reptiles • Order Squamata • Order Chelonia • Order Crocodilia • Order Rynchocephilia

10. Order SquamataSnakes and Lizards • Types of Lizards • Komodo Dragon-largest lizard (monitors), also contain toxic saliva and is thought to be the closet relative to snakes-it has a forked tongue

14. Order SquamataSnakes and Lizards • Types of Lizards • Gecko – group of lizards that often have suction cups on feet

18. Order SquamataSnakes and Lizards • Types of Lizards • Frilled Lizard – has a large frill of skin around the neck

20. Order SquamataSnakes and Lizards • Types of Lizards • Chameleon – has the ability to change colors and uses sticky tongue to catch prey

22. Order SquamataSnakes and Lizards • Types of Lizards • Gila Monster – a venomous lizard, bites can cause illness, even death. Found in Mexico and Arizona.

24. Order SquamataSnakes and Lizards • Types of Lizards • Beaded Lizard – venomous lizard

26. Order SquamataSnakes and Lizards • Types of Lizards • Horned Lizards (horned toads) – shoot blood from their eyes as a defense mechanism

28. Order SquamataSnakes and Lizards • Evidence suggests that snakes evolved from lizards that burrowed. Snakes retain small leg bones even though they have no legs.

29. Order SquamataSnakes and Lizards • Snakes have the ability to extend their jaw and swallow prey much larger than them.

31. Order SquamataSnakes and Lizards • Types of snakes • Constrictors – not venomous, prey is killed by squeezing and suffocating

32. Python

33. Python

34. Boa constrictor

35. California king snake

36. Anaconda

37. Boa Constrictor

38. Range • Western North America • Central and South America • Africa • Madagascar • Western Asia • Pacific Islands

39. Habitat • Rainforests • Swamps • Woodlands • Grasslands • Savannas • Semi desert scrublands

40. Boas vs. Pythons Boa Python

41. Boas • Found in the old and new world • Give birth to live young

42. Pythons • Found only in the old world • Have an additional bone on their head • Have additional teeth • Lay eggs

43. Feeding

45. Florida Python

48. Order SquamataSnakes and Lizards • Types of snakes • Venomous snakes • Not very many snakes are venomous, they fall into four groups.

49. Order SquamataSnakes and Lizards • Venomous snakes • Cobras and coral snakes- inject a neurotoxin that causes paralysis and breathing difficulties.

50. King Cobra