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NEET Biology Human Reproduction Question Bank Implantation and Gastrulation

  • question_answer
    The yolk plug is a structure in gastrula which is formed by the protrusion of

    A) Endodermal cells

    B) Endo-mesodermal cells

    C) Ectodermal cells

    D) Mesodermal cells

    Correct Answer: A

    Solution :

    By the end of gastrulation, blastocoel will be reduced. A yolk plug of endodermal origin closes the blastopore.


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