1. Section 4 Reptiles

2. Reptiles A reptile is an ectothermic vertebrate that has lungs and scaly skin. Examples: snakes, lizards, turtles, alligators, and crocodiles (sea turtles still have lungs) Can spend their entire life on dry land. Breathe with lungs

3. Adaptations for Life on Land The skin, kidneys, and eggs of reptiles are adapted to conserve water. Have dry, tough skins covered with scales – this helps keep water in their bodies. Have kidneys that filter wastes from the blood

4. An Egg With a Shell Reptiles have internal fertilization and lay their eggs on land It’s egg has a shell and membranes that protect the developing embryo and help keep it from drying out. Figure 19 page 101

5. Lizards and Snakes Both are reptiles that have skin covered with overlapping scales. As they grow, they shed Live in warm areas Lizards have 4 legs – snakes have none

6. Alligators and Crocodiles Both are large, carnivorous reptiles that care for their young. Alligators have broad, rounded snouts, with only a few visible teeth when their mouths are shut. Crocodiles have pointed snouts, with most of their teeth visible when their mouths are shut.

7. Alligators and Crocodiles Carnivores that hunt at night Strong, muscular tails to swim, jaw muscles are strong Care for their newly hatched young

8. Turtles A turtle is a reptile whose body is covered by a protective shell that includes the ribs and the backbone. Have a sharp-edged beak instead of teeth for tearing food Some are carnivores, some are herbivores