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Railways Sample Paper RRB (Assistant Loco Pilot) Sample Test Paper-7

  • question_answer
    In which one of the following animals, is skin a respiratory organ?

    A)  Cockroach                   

    B)       Frog                            

    C)       Shark                          

    D)       Whale             

    Correct Answer: B

    Solution :

    In Frog, skin is a respiratory organ. Amphibians use their skin as a respiratory surface. Frogs eliminate carbon dioxide 2.5 times as fast through their skin as they do through their lungs. Whale (a fish) obtain 60% of their oxygen through their skin. Humans exchange only 1% of their carbon dioxide through their skin. Constraints of water loss dictate that terrestrial animals must develop more efficient lungs.


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