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7th Class Science Sample Paper Science Olympiad Model Test Paper-8

  • question_answer
    In carrying oxygen from the atmosphere to the cells, not only respiratory system but also circulatory system is involved. The organ shown below is the organ from where oxygen enters into circulatory system from respiratory system. Name the organ.

    A) Heart

    B) Lung

    C) Kidney

    D) Brain

    E) None of these

    Correct Answer: A

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