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  2. Embryonic sac - Wikipedia

    en.wikipedia.org/wiki/Embryonic_sac

    A megaspore mother cell, or megasporocyte, is a diploid cell in plants in which meiosis will occur, resulting in the production of four haploid megaspores. At least one of the spores develop into haploid female gametophytes, the megagametophytes. [1] The megaspore mother cell arises within the megasporangium tissue.

  3. Megagametogenesis - Wikipedia

    en.wikipedia.org/wiki/Megagametogenesis

    The three cells left at the end of the cell near the micropylar become the egg apparatus with an egg cell in the center and two synergids. A cell wall forms around the other set of nuclei and forms the antipodals. The cells in the center develop into the central cell. This entire structure with its eight nuclei is called the embryonic sac.

  4. Ovule - Wikipedia

    en.wikipedia.org/wiki/Ovule

    The female gametophyte — specifically termed a megagametophyte — is also called the embryo sac in angiosperms. The megagametophyte produces an egg cell for the purpose of fertilization. The ovule is a small structure present in the ovary. It is attached to the placenta by a stalk called a funicle. The funicle provides nourishment to the ovule.

  5. Egg cell - Wikipedia

    en.wikipedia.org/wiki/Egg_cell

    The gametophyte produces an egg cell. After fertilization, the ovule develops into a seed containing the embryo. [14] In flowering plants, the female gametophyte (sometimes referred to as the embryo sac) has been reduced to just eight cells inside the ovule. The gametophyte cell closest to the micropyle opening of the ovule develops into the ...

  6. Megaspore - Wikipedia

    en.wikipedia.org/wiki/Megaspore

    Therefore, the resulting embryo sac is a seven-celled structure consisting of one central cell, one egg cell, two synergid cells, and three antipodal cells. [ 2 ] [ 3 ] The bisporic and tetrasporic patterns undergo varying processes and result in varying embryo sacs as well.

  7. Double fertilization - Wikipedia

    en.wikipedia.org/wiki/Double_fertilization

    The mature embryonic sac of an unfertilized ovule is 7-cellular and 8-nucleate. It is arranged in the form of 3+1+3 (from top to bottom) i.e. 3 antipodal cells, 1 central cell (binucleate), 2 synergids & 1 egg cell. One sperm fertilizes the egg cell and the other sperm fuses with the two polar nuclei of

  8. Embryomics - Wikipedia

    en.wikipedia.org/wiki/Embryomics

    The embryo map is a sequence of 3-D images, or slices of 3-D images, of the developing embryo which, if viewed rapidly in temporal order, forms a time-lapse view of the growing embryo. The embryogenic tree is a diagram which shows the temporal development of each of the cell lines in the embryo.

  9. Oocyte - Wikipedia

    en.wikipedia.org/wiki/Oocyte

    An oocyte (/ ˈ oʊ ə s aɪ t /, oöcyte, or ovocyte is a female gametocyte or germ cell involved in reproduction. In other words, it is an immature ovum, or egg cell. An oocyte is produced in a female fetus in the ovary during female gametogenesis. The female germ cells produce a primordial germ cell (PGC), which then undergoes mitosis ...