Exploring Invertebrate Life on Land
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Questions and Answers

Which of the following is NOT a characteristic related to the success of arthropods?

  • Jointed appendages
  • Trilobite (correct)
  • Hard exoskeleton
  • Segmented body

    • What is the estimated time range of the Cambrian explosion?

  • 535 - 525 bya
  • 525 - 515 mya
  • 535 - 525 mya (correct)
  • 525 - 515 bya

    • How many species are estimated to belong to the phylum Arthropoda?

  • Trillions
  • Thousands
  • Billions
  • Millions (correct)

    • What is the main factor responsible for the diversity in body plans among arthropods?

    <p>Changes in Hox gene sequence and regulation</p> Signup and view all the answers

    What do Hox genes specify in the embryo of an animal?

    <p>Regions of the body plan</p> Signup and view all the answers

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