Final answer:
After double fertilization in angiosperms, a zygote and an endosperm form. The zygote develops into the embryo, and the endosperm serves as a food source for the embryo, with both being part of the seed, which is enclosed by a seed coat.
Step-by-step explanation:
After Double Fertilization After double fertilization, a zygote and endosperm form. Through the unique process that occurs in angiosperms, which is termed double fertilization, one sperm cell fuses with an egg to create a diploid zygote. This zygote will eventually develop into the embryo. Meanwhile, another sperm cell fuses with the polar nuclei to form a triploid cell that develops into the endosperm. The endosperm is a specialized nutritive tissue that provides food reserves to the developing embryo, important for its growth and development.
The embryo and endosperm are initially enclosed within the ovule, which later matures into a seed. This seed contains the embryo, the nutrient-rich endosperm, and is surrounded by a protective seed coat. In some plant species, known as endospermic dicots, the embryo's food reserves are stored in the endosperm even in the mature seed, while in other plants, such as non-endospermic dicots, the endosperm is absorbed by the growing embryo, particularly into the cotyledons.After double fertilization in angiosperms, a zygote and endosperm form. The endosperm is a triploid tissue resulting from the fusion of a sperm with polar nuclei and serves as a nutritive tissue for the developing embryo. The zygote develops into the future embryo, while the endosperm provides nourishment for its growth.