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  5. Respiration in Organisms

7th Class Science Respiration in Organisms Question Bank Self Test-7

  • question_answer
    Which one of the following is the outer organ of respiratory system?

    A)  Nose

    B)  Windpipe

    C)  Trachea

    D)  All of these

    E)  None of these

    Correct Answer: A

    Solution :


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