1. Amphibians and Reptiles

2. Amphibians: Animals that can live in water Have lungs Have legs Live part of life in water and part on land ectotherms Examples: frogs, salamanders

3. Amphibians:

4. Skin: Thin, smooth, and moist Absorbs water to keep them hydrated Absorbs oxygen Can be colorful (warning)

5. Amphibians: Metamorphosis: A phase in the life cycle during which a rapid change from immature form to adult occurs

6. Amphibians: Metamorphosis:

7. Amphibians: Three Groups: 1. Caecilians Live in tropics Look like earthworms No legs Can have scales

8. Amphibians: Three Groups: 2. Salamanders Live under stones/ logs in woods Long tail 4 strong legs Grow lungs & most loose their gills

9. Amphibians: Three Groups: 3. Frogs and Toads Over 90% of all amphibians Live all over world (except extreme cold) Highly adapted for land Strong legs for jumping Well developed ears Long sticky tongue

10. Amphibians: Ecological Indicators: unhealthy ones are a sign of change in an ecosystem Very sensitive to changes in their environment Thin skin Ectothermic

11. Reptiles: Spend entire life on land

12. Characteristics of Reptiles: 1.Thick Skin 2.Ectothermic 3.Amniotic egg protected by a shell 4.Internal fertilization

13. Characteristics of Reptiles: Parts of the amniotic egg: Shell (protects from damage) Albumen (provides water and protein Yolk ( food)

14. Characteristics of Reptiles: Parts of the amniotic egg: Amniotic sac ( filled with water to protect embryo) Allantois ( stores embryo’s waste)

15. Four Kinds of Reptiles: 1.Turtles/Tortoises

16. Four Kinds of Reptiles: 2. Crocodiles/Alligators

17. Four Kinds of Reptiles: 3. Snakes/Lizards

18. Four Kinds of Reptiles: 4. Tuataras