AP BIOLOGY

Detailed explanation-1: -Final answer: A seed consists of seed coat, embryo and cotyledons .

Detailed explanation-2: -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.

Detailed explanation-3: -Seed structures are composed of a protective seed coat surrounding a plant embryo, and a food store for the developing embryo. The embryo contains the precursor tissues for leaves, stem, and roots. The endosperm and cotyledons-seed leaves-act as the food reserves for the growing embryo.

Detailed explanation-4: -The seed of angiosperms consist of three distinct parts, the seed coat, endosperm, and embryo. The endosperm is a tissue that surrounds the embryo of seeds in angiosperms and functions primarily in providing nutrition for embryonic development.

Detailed explanation-5: -An endosperm provides food and nourishment to the developing plant embryo in angiosperms. An embryo is a part of the seed that develops into a new individual of the species. An endosperm occurs in angiosperms, while an embryo occurs in every multicellular organism that undergoes fertilisation.