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Reptiles Ms. Bridgeland

Reptiles Ms. Bridgeland. Introduction to Reptiles. What are Reptiles? . Ectotherms : What is an ectotherm again?. Reptiles. Ectotherm : an animal whose body does not produce much internal heat “Cold-blooded”. Are reptiles vertebrates or invertebrates?.

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Reptiles Ms. Bridgeland

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  1. Reptiles Ms. Bridgeland

  2. Introduction to Reptiles

  3. What are Reptiles? • Ectotherms: What is an ectotherm again?

  4. Reptiles • Ectotherm: an animal whose body does not produce much internal heat • “Cold-blooded”

  5. Are reptiles vertebrates or invertebrates? • Reptiles are Vertebrates that have lungs and scaly skin.

  6. How do reptiles get their air? • Reptiles get their oxygenfrom airand breathe entirely with lungs

  7. Reptile Evolution • Even through some reptiles that live in water like sea turtles can swim, they evolved from reptiles that lived on land. Therefore, even though they live in water, they still breathe with lungs, and come ashore to lay eggs.

  8. To thrive on land, what adaptations do reptiles need?

  9. Adaptations • Dry, tough skin • Covered in scales • Kidneys (organs that filter waste) are different in that the reptile does not lose too much water • Lay eggs with shells

  10. Why does having tough skin with scales help animals live on land?

  11. Scaly Skin Benefits • Protects the reptiles • Helps conserve water, or keep it inside their bodies to help with living in the sun

  12. An Egg with a Shell • Reptiles lay their eggs on land • Reptile eggs have a leathery shell and membranesthat protect the developing embryo (baby reptile). • Why do reptile eggs have these shells?

  13. Why do reptiles lay eggs with shells? • The shells keep the inside of the egg moist and keeps the egg from drying out • This type of egg is called an amniotic egg. • Tiny pores in the shell allow oxygen gas and carbon dioxide gas out

  14. In addition to a shell, an amniotic egg has 3 membranes • Membrane 1: holds the yolk, which is the embryo’s energy supply • Membrane 2: the embryo’s wastes collect inside • Membrane 3: surrounds the embryo, cushioning it and keeping it moist

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