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Hint: A gamete is a haploid cell that fuses with another haploid cell during fertilization. The production of male gametes in flowering plants occurs at the time of double fertilization.
Complete answer: The generative nucleus is one of the two nuclei present in an angiosperm pollen grain that develops into an elongated pollen tube that includes a tube nucleus and a generative nucleus. When the pollen grain lands on a receptive stigma, the latter of which splits into two sperm nuclei.
a) Ovary: The ovary is part of the female reproductive organ of the flower, or gynoecium, in flowering plants. Specifically, it is a portion of the pistil that contains the ovule(s) and the base of the petals and sepals is situated above or below or at the point of attachment.
b) Anther: An anther is a crucial framework for the reproduction of flowering plants. It sits at the top of the male structure's filament, known as the stamen. It creates, stores, and provides a place for the male sex cells to remain until the time is right for them to be dispersed.
c) Microsporangia: It is a male sporangium that creates microsporocytes which contain microspores (micro meiocytes). It is present in specialized structures, such as sori in ferns, cones (strobili) in some pteridophytes, and most gymnosperms, or flowers in angiosperms, sporangia may be carried.
d) Sporophyte: It is a multicellular diploid process in the life cycle of a plant or algae. The gametophytes in flowering plants are very small in size and are represented by the germinated pollen and the embryo sac.
Hence the correct answer is option E.
Note: The portion of the pistil forming an ovum is an ovary. Anthers are the portion of pollen grain-producing stamens (male gametophytes). The microsporangium in anther gives birth to the mother cells of the microspore. The sporophyte is the situation in plants in which the spore produces the gametophyte of a plant as in ferns in an alternation of generation. The generative nucleus is one of the two angiosperm nuclei that divide during double fertilization to produce two male gamete nuclei (male gametes).
Complete answer: The generative nucleus is one of the two nuclei present in an angiosperm pollen grain that develops into an elongated pollen tube that includes a tube nucleus and a generative nucleus. When the pollen grain lands on a receptive stigma, the latter of which splits into two sperm nuclei.
a) Ovary: The ovary is part of the female reproductive organ of the flower, or gynoecium, in flowering plants. Specifically, it is a portion of the pistil that contains the ovule(s) and the base of the petals and sepals is situated above or below or at the point of attachment.
b) Anther: An anther is a crucial framework for the reproduction of flowering plants. It sits at the top of the male structure's filament, known as the stamen. It creates, stores, and provides a place for the male sex cells to remain until the time is right for them to be dispersed.
c) Microsporangia: It is a male sporangium that creates microsporocytes which contain microspores (micro meiocytes). It is present in specialized structures, such as sori in ferns, cones (strobili) in some pteridophytes, and most gymnosperms, or flowers in angiosperms, sporangia may be carried.
d) Sporophyte: It is a multicellular diploid process in the life cycle of a plant or algae. The gametophytes in flowering plants are very small in size and are represented by the germinated pollen and the embryo sac.
Hence the correct answer is option E.
Note: The portion of the pistil forming an ovum is an ovary. Anthers are the portion of pollen grain-producing stamens (male gametophytes). The microsporangium in anther gives birth to the mother cells of the microspore. The sporophyte is the situation in plants in which the spore produces the gametophyte of a plant as in ferns in an alternation of generation. The generative nucleus is one of the two angiosperm nuclei that divide during double fertilization to produce two male gamete nuclei (male gametes).
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