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Unveiling the Fascinating World of Reptiles: Adaptations and Behaviors

Delve into the intriguing realm of reptiles, exploring their unique traits and adaptations for land life. Discover the diverse groups, feeding habits, respiratory systems, circulatory mechanisms, and reproductive strategies of these captivating creatures.

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Unveiling the Fascinating World of Reptiles: Adaptations and Behaviors

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  1. Chapter 31 Reptiles and Birds Godzwilla rules!!!

  2. Warm-up What factors distinguish reptiles from amphibians? Essential question How have reptiles adapted to be able to live their entire life on land, separate from water?

  3. Reptiles • vertebrates • dry, scaly skin • lungs • terrestrial eggs with several membranes

  4. Keys to Reptile Life • well developed lungs • double loop circulatory system • water conserving excretory system • strong limbs • internal fertilization • shelled, terrestrial eggs

  5. Groups of Reptiles • Lizards/ snakes Order Squamata • Crocodilian Order Crocodilia • warm climates,alligators, crocs, caimans • Turtles (water) and tortoises (land) Order Testudines • Tuataras Order Sphenodonata • like lizards, lack external ears, have primitive scales, have “third eye”

  6. Tuatara Anyone got a cricket??

  7. Feeding • many types: herbivores, carnivores, omnivores

  8. Respiration • well developed lungs • most reptiles cannot exchange gases through skin

  9. Circulation • double loop circulatory system • heart contains 2 atria and 1 or 2 ventricles (crocodilians only) • Ectotherm - animal that relies on behavior to help control body temperature (warms blood by the sun)

  10. Excretion • Urine produced in kidneys, expelled in cloaca • In water reptiles (crocs and alligators) waste is ammonia and is diluted with water • In land reptiles waste is converted to uric acid (less toxic), excess water is absorbed urine turns to crystals and forms pasty white solids (to conserve water)

  11. Response • Response very complex • Larger brain • Good sense of smell ex snakes • Good hearing • Some snakes have small holes in the head called the pit organ that can see infrared (heat)

  12. Movement • Movement- legs rotated under body, help carry body weight

  13. Reproduction • Internal fertilization • Oviparous • Amniotic egg- shell and membranes that create protective environment in which the embryo can develop out of the water

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