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प्रश्न
How many meiotic divisions will be needed to produce 44 female gametophytes in angiosperms?
विकल्प
11
22
44
66
उत्तर
44
Explanation:
The female gametophyte develops from megaspore mother cell by meiotic division during the process of megasporogenesis. The meiosis in the megaspore mother cell produces four haploid megaspores out of which three degenerate and only one matures to form the functional female gametophyte. Thus to produce 44 female gametophytes, 44 meiotic divisions are needed.
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संबंधित प्रश्न
Sketch and label stages in development of angiospermic female gametophyte from functional megaspore.
With the help of a neat and labelled diagram, describe the development of the female gametophyte of angiosperms.
The haploid cell which divides by mitosis to form embryo sac is ______.
During the development of the embryo sac, a mega pore mother cell undergoes ______ meiosis and mitosis respectively.
The lever mechanism for pollination is seen in ______.
How many mitotic divisions take place during the formation of a female gametophyte from a functional megaspore?
After penetrating stigmatic and stylar tissue, the pollen tube usually grows towards egg because ______,
Write a short note on embryo sac.
The secondary nucleus is formed by the fusion of______.
How many haploid nuclei are present in a mature female gametophyte of a flowering plant?
