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7th Class Science Sample Paper Science Olympiad Model Test Paper-15

  • question_answer
    Which one of the following statements is incorrect about trachea?

    A) Trachea is a part of our respiratory system

    B) Trachea is connected to nostrils by the bronchus

    C) Trachea is also known as windpipe

    D) The upper end of trachea has a voice box

    E) None of these

    Correct Answer: B

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