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BHU PMT BHU PMT (Screening) Solved Paper-2009

  • question_answer
    When pollen tube enters through micropyle, the process is called

    A)  porogamy                         

    B)  chalazogamy

    C)  mesogamy                        

    D)  apogamy

    Correct Answer: A

    Solution :

                 The pollen tube may enter the ovule by following one of three routes given below :  Porogamy?Pollen tube enters the ovule through micropyle, eg, most angiosperms.  Mesogamy?Pollen tube enters the ovule through integuments {eg, Cucurbita) or through funiculus (eg, Pistacia).  Chalazogamy?Pollen tube enters the ovule through chalazal tissues, eg, Casuarina, Beta vulgaris, Juglens regia, etc.


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