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  3. 7th Class
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  5. Respiration in Organisms

7th Class Science Respiration in Organisms Question Bank Respiration In Plants And Animals

  • question_answer
    In cockroaches, air enters through ______.

    A) gills                             

    B) trachea

    C) skin                             

    D) spiracles

    Correct Answer: D

    Solution :

    spiracles


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