Chordates Quiz
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Questions and Answers

What is a characteristic that separates chordates from all other animals?

  • Blastopore, which becomes the anus
  • Post-anal tail (correct)
  • Bilateral symmetry
  • True coelom

    • Which extant chordates are postulated to be most like the earliest chordates in appearance?

  • Lancelets (correct)
  • Amphibians
  • Reptiles
  • Adult tunicates

    • What did chordate pharyngeal slits appear to have functioned first as?

  • Components of the jaw
  • The digestive system's opening
  • Gill slits for respiration
  • Suspension-feeding devices (correct)

    • A new species of aquatic chordate closely resembles an ancient form. In addition to the given characteristics, it will probably have which of the following characteristics?

    <p>No jaws</p> Signup and view all the answers

    How do lampreys differ from hagfishes?

    <p>Having pharyngeal clefts that develop into pharyngeal slits</p> Signup and view all the answers

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