In connection with circulatory system, valves are present

  • [AIPMT 1995]
  • A

    Not only in heart and blood vessels of vertebrates and invertebrates, but in vertebrate lymphatics as well

  • B

    Vertebrate heart only

  • C

    Vertebrate heart and invertebrate hearts only

  • D

    Vertebrate hearts, invertebrate hearts and their blood vessels

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