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Reptiles 31
Reptiles 31
Reptiles 31
Reptiles 31
Reptiles 31
Reptiles 31
Reptiles 31
Reptiles 31
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Reptiles 31

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  • 1. Tedra McNair April 22, 2009 Period, 2 Chapter 31 Reptiles and Birds
  • 2. Evolution of Reptiles
    • Reptiles evolved from amphibian-like ancestors. Reptiles have evolved into unique forms such as:
    • Turtles, snakes , and dinosaurs, but they also have taken on the appearance and habits of other vertebrate groups, such as sharks and dolphins .
  • 3. Form and Function in Reptiles
    • - Reptiles eat a wide
    • variety of foods.
    • -Reptiles have two spongy
    • lungs that provide more
    • gas-exchange area than
    • those of amphibians.
    • However snakes only have
    • one.
    Respiration Feeding
  • 4. What Is A Reptile?
    • A reptile is a vertebrate that has dry, scaly skin, lungs, and terrestrial eggs with several membranes.
  • 5. Form and Function in Reptiles
    • Reproduction
    • Reptiles reproduce by
    • internal fertilization. This is
    • where the male deposits
    • sperm inside of female.
    • A reptilian egg is created to
    • protect the embryo from
    • drying out. This egg is
    • called an amniotic (am-nee-
    • AHT-IK) egg.
  • 6. The Last Survivors
    • The four surviving groups of reptiles are lizards and snakes, crocodilians , turtles and tortoises, and the tuatara (too-uh-TAH-ruh)
  • 7. What Is a Bird?
    • Birds are reptile-like animals that maintain a constant internal body temperature. They include the following:
    • An outer covering of feathers
    • Two legs that are covered in scales and are used for walking and perching.
    • Front limbs modified into wings.
  • 8. Form, Function, and Flight
    • Body Temperature Control
    • Unlike reptiles, birds can
    • generate their own body heat.
    • Animals that generate their
    • own body heat are called
    • endotherms.
    • Feeding
    • Any body heat that a bird loses
    • must be regained by eating
    • food. The more food a bird
    • eats, the more heat energy its
    • metabolism can generate.

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