4th Class Science Question Bank Science Mock Test-20

  • question_answer 8) Which of the following correctly represents the passage of oxygen in the respiratory system?

    A)  Nose\[\to \]Lungs\[\to \]Wind pipe\[\to \]Blood

    B)   Nose\[\to \]Blood\[\to \]Wind pipe\[\to \]Lungs

    C)   Nose\[\to \]Blood\[\to \]Lungs\[\to \]Wind pipe

    D)   Nose\[\to \]Wind pipe\[\to \]Lungs\[\to \]Blood

    Correct Answer: D

    Solution :

    Not Available

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