12th Class Biology Sexual Reproduction in Flowering Plant / फूलों के पौधों में यौन प्रजनन Question Bank Case Based - Sexual Reproduction in Flowering Plants

  • question_answer
    Direction Read the following and answer the questions from given below
    The ovule or the megasporangium develops as a small protuberance of the placental tissue. In the very young ovule, a single hypodermal cell is differentiated as the archesporium. This archesporium cell may or may not cut off some parietal cells and then becomes the Megaspore Mother Cell (MMC). The MMC undergoes division to form megaspore cells. Meanwhile two integuments develop from the base of the ovule.
    (i) Which of these cells is the largest cell of the ovule?

    A) Antipodal cell

    B) Central cell

    C) Megaspore mother cell

    D) The size of the cells varies from species to species and none of the given above can be treated as largest

    Correct Answer: C

    Solution :

    [c] Ovules generally differentiate a single Megaspore Mother Cell (MMC) in the micropylar region of the nucellus. It is a largest cell containing dense cytoplasm and prominent nucleus.


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