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7CD ‘%O ANNTWL१८८2-27'[ निरका o |ग )>Aasreoएज &Lob &,=&£ZaiyA gS f 1 ही o |
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Answer» An ovary contains at least oneovule. Inside an ovule, cells divide to produce aneggand two other cells calledpolar nuclei. These three cells arehaploid, which means they have one set of chromosomes, and is designated byn. Most cells in angiosperms arediploid, or have two sets of chromosomes. In diploid (2n) cells, one set of chromosomes comes from the male parent and the other set comes from the female parent. In addition to eggs and polar nuclei, sperm cells from a pollen grain are also haploid. Once the pollen tube reaches themicropyle, or the opening of an ovule, it releases two haploid sperm cells into the ovule. One sperm cell will fuse with the egg, resulting in a diploid zygote. The other sperm cell will fuse with the two polar nuclei, creating atriploid(3n) structure that will grow rapidly into the endosperm. Like my answer if you find it useful! |
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