Open circulatory system is present in

  • A
    Arthropods and mammals
  • B
    Mollusca and aves
  • C
    Arthropods and molluscs
  • D
    Mammals and aves

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Which of the following organisms exhibits incomplete double circulation?

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Which of the following represents the correct pathway of blood circulation in the human body?

How many times will a red blood corpuscle $(RBC)$ have to pass through the heart in its journey from the hepatic artery to the aorta?

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