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One sperm nucleus fertilizes the egg cell, forming a zygote, while the other sperm nucleus usually fuses with the binucleate central cell,. This fusion involves three haploid nuclei, thus, is called triple fusion. Therefore, we can say that the process of formation of primary. In the nuclear type of endosperm formation, the initial division of the primary endosperm nucleus, along with several. The endosperm is a nutritive tissue formed from the primary endosperm nucleus (PEN), which results from the fusion of a male gamete. This fusion results in a triploid (3n) primary endosperm nucleus, which then gives rise to the endosperm, a specialized.
The division of zygote usually begins after the endosperm is sufficiently grown. Even if the zygote and primary endosperm nucleus.