AP BIOLOGY

Detailed explanation-1: -Angiosperm seeds develop from ovules within the ovary, and have three parts: a seed coat encloses an embryo together with a stored food supply known as endosperm.

Detailed explanation-2: -Seed coats can be thin and soft as in beans or thick and hard as in locust or coconut seeds. Endosperm, a temporary food supply, is packed around the embryo in the form of special leaves called cotyledons or seed leaves.

Detailed explanation-3: -Seeds consists of the embryo along with stored food, which serves for the initial growth of the embryo during germination.

Detailed explanation-4: -Most seeds consist of three parts: embryo, endosperm, and seed coat. The embryo is a tiny plant that has a root, a stem, and one or more leaves. The endosperm is the nutritive tissue of the seed, often a combination of starch, oil, and protein.