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AMU Medical AMU Solved Paper-2012

  • question_answer
    An aquatic living fossil with ancient origin and many primitive characters, which respires through book gills, is

    A)  Limulus               

    B)  Cancer

    C)  Lucifer                

    D)  Daphnia

    Correct Answer: B

    Solution :

                    Limulus or king crab is a large sized marine arthropod which represents a specialized group of chelicerate animals. It has remained almost unchanged since the last 200 million years. It is therefore, also called living fossil. Book gills serve the function of respiratory organs in Limulus.


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