AP BIOLOGY

Detailed explanation-1: -Double fertilization is the characteristic of angiosperms. In this process, one male gamete fuses with the egg to form a zygote, which is known as syngamy. The other male gamete fuses with the two polar nuclei in the central cell to produce a triploid primary endosperm nucleus or PEN.

Detailed explanation-2: -In angiosperms, double fertilization results in the production of an embryo and endosperm, both of which are critical for the development of viable seed. Diploid plants produce diploid embryos and triploid endosperm tissue. The endosperm contains two genomes of the maternal parent and one genome of the paternal parent.

Detailed explanation-3: -double fertilization, in flowering plant reproduction, the fusion of the egg and sperm and the simultaneous fusion of a second sperm and two polar nuclei that ultimately results in the formation of the endosperm (the food-storage tissue) of the seed.

Detailed explanation-4: -During flowering plant reproduction, two structures are created: a zygote and the endosperm. A zygote will grow and develop into an embryo, or baby plant. The endosperm is the plant embryo’s food source. This process of forming a zygote and endosperm is called double fertilization, and it is unique to angiosperms.

Detailed explanation-5: -Double fertilization results in the formation of triploid nucleus. The zygote formed will be diploid in nature, whereas the endosperm will be triploid.