What are the parts of the pine seed, and what is the origin of each of these parts?

The seed coat is composed of stiff parenchymal tissue that protects. A thin brown film is located under the cover layer. The central nucleolus of the seed is its endosperm with a supply of nutrients. In the center of the endosperm lies a club-shaped embryo. On the one side of the embryo is a bud of several cotyledons, and on the other, the embryonic root. The growth cone lies between the cotyledons. The embryo does not fuse with the endosperm. In the embryo, the root is oriented towards the surface of the seed, and the kidney is polarized into the depth of the seed.