Discovering Animal Size
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Questions and Answers

Which of the following statements is true about an animal's body plan?

  • An animal's body plan is the result of a pattern of development programmed by the genome. (correct)
  • An animal's body plan is influenced by the size of its muscles.
  • An animal's body plan is consciously designed by the animal itself.
  • An animal's body plan is determined solely by physical laws.

    • What is a limitation that affects animal body plans as their size increases?

  • Mobility becomes unlimited.
  • Internal skeletons, such as those of vertebrates, become less necessary.
  • The muscles required for locomotion become a smaller fraction of the total body mass.
  • Thinner skeletons are required to maintain adequate support. (correct)

    • Which type of animal body plan is affected by the limitation mentioned in the text?

  • Animals with external skeletons, such as insects and other arthropods.
  • Animals with no skeletons.
  • All animals are affected by this limitation. (correct)
  • Animals with internal skeletons, such as vertebrates.

    • What happens to the fraction of body mass in leg muscles as an animal's body size increases?

    <p>It increases.</p> Signup and view all the answers

    What is the relationship between an animal's body size and its mobility?

    <p>As body size increases, mobility decreases.</p> Signup and view all the answers

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