Here's why:
* Double fertilization: This is a unique process in flowering plants where two sperm nuclei from a pollen grain fuse with two different cells within the ovule.
* One sperm nucleus: Fuses with the egg cell to form a diploid zygote, which will develop into the embryo.
* The other sperm nucleus: Fuses with the two polar nuclei within the central cell to form a triploid (3n) endosperm nucleus.
* Endosperm: This triploid tissue serves as a food source for the developing embryo within the seed.
So, the triploid cell resulting from double fertilization is the foundation for the endosperm, the nourishing tissue inside the seed.
