Crocodilians and Gharials Quiz
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Questions and Answers

What is a major factor contributing to the loss of tuatara populations in New Zealand?

  • Natural disasters such as earthquakes
  • Climate change affecting their habitat
  • Introduction of nonnative species like dogs, cats, and rats (correct)
  • Overhunting by humans
  • Which feature of tuataras' skull is unique and serves a role in regulating daily and seasonal rhythms?

  • Sharp teeth for hunting prey
  • Large nostrils for enhanced sense of smell
  • Well-developed median parietal eye (correct)
  • Long tail for balance and agility
  • Modern crocodilians differ little from the primitive crocodilians of the early Mesozoic, remaining unchanged for how many years?

  • 200 million years (correct)
  • 1 million years
  • 50 million years
  • 500 million years
  • Which of the following statements about crocodilians is true?

    <p>Crocodilians are closely related to birds.</p> Signup and view all the answers

    What is the primary geographic region where alligators and caimans are found?

    <p>New World</p> Signup and view all the answers

    How do tuataras differ from other reptiles like crocodilians in terms of reproduction?

    <p>Tuataras lay eggs on land.</p> Signup and view all the answers

    Which characteristic makes tuataras particularly vulnerable to threats like predation?

    <p>Slow growth rate and low reproductive rates</p> Signup and view all the answers

    'Third eye' found in tuataras plays a role in:

    <p>Regulating daily and seasonal rhythms</p> Signup and view all the answers

    What is a major threat to crocodilians that has led them to face an uncertain future?

    <p>Human activities impacting their populations</p> Signup and view all the answers

    What is distinctive about the skull of tuataras compared to other reptiles?

    <p>A well-developed median parietal eye</p> Signup and view all the answers

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