In angiosperm seeds, endosperm development takes precedence over embryo development to furnish essential nutrients for the growing embryo. The endosperm's function is to store and deliver sustenance for the embryo's nascent stages.- The formation of the endosperm occurs subsequent to the fusion of a sperm nucleus with two polar nuclei, thereby guaranteeing nutrient accessibility for the zygote.- In albuminous seeds, exemplified by wheat and maize, the endosperm remains intact in the mature seed, functioning as a storage reservoir for nutrients. These nutrients, encompassing starch, proteins, and oils, are vital for seed germination and subsequent growth.