BHU PMT BHU PMT (Mains) Solved Paper-2008

  • question_answer
    Polyp phase is absent in

    A)  Hydra                                  

    B)  Amelia

    C)  Physalia                              

    D)  Obelia

    Correct Answer: B

    Solution :

                     Aurelia (jelly fish) belongs to class-Scyphozoa, phylum-Coelenterata in which, medusoid phase is dominant, polypoid phase absent. Hydra, Obelia, Physalia are the members of class Hydrozoa in which, both medusoid and polypoid stages are present.


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