Manipal Medical Manipal Medical Solved Paper-2007

  • question_answer
    When a diploid female plant is crossed with a tetraploid male, the ploidy of endosperm cells in the resulting seed is

    A)  tetraploidy      

    B)  pentaploidy

    C)  diploidy        

    D)  triploidy

    Correct Answer: A

    Solution :

    Secondary nucleus of female would have 2n chromosome that would be fertilized by male gametes which in this case would be 2n because it is formed from tetraploid male. Hence, endosperm would be\[2n+2n=4n\].


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