*Seed coat: A layer by which a seed is covered.
*Kernel:Without seed coat, the rest part of seed is combinedly called kernel.
*Testa: Outer layer of seed coat.
*Tegmen: Inner layer of seed coat.
*Endosperm: It is the storage food materials of seed which is situated outside the cotyledons.
*Epicotyle: A part of the embryo, which produces seed or the above ground part of the plant.
*Coleoptile: The first leaf above the cotyledons which encloses the stem tip and other part of the plant.
*Hilum: A depressed mark or scar from where the seed was attached directly with placenta in legumino pods.
*Mesocotyle: In some monocotyledonous plant like wheat, rice etc. the part of the seedlings stems below the shoot gets elongated which is called Mesocotyle.
*Radicle: Post primordial in the embryo of a seed.
*Plumule: The major young bud of the embryo within a seed or seedling from which the aerial portion of the plant will develop.
*Cotyledon: Cotyledon are also called seed leaf, the primary or first leaf of an embryo in seed plant.
*Micropyle: The opening form outside the seed leading through the integument to the nucellus. It marks the portion of the radicle.