A seed has three main parts. The parts of a seed are the seed coat which protects the seed. The endosperm helps the seed grow when it is first planted. The embryo which is made up of three different parts such as the cotyledon and the primary root.
1. Seed coat, 2. Endosperm and 3. Embryo are three parts of a seed. The seed coat protects the inner parts of the seed; The endosperm nourishes the developing embryo and the embryo on germination develops in to a new plant.