Corn (maize) is a monocot that produces albuminous seeds. In these seeds, the endosperm remains intact at maturity, serving as the primary storage tissue for nutrients that support the embryo during the initial stages of germination.

The primary endosperm nucleus undergoes repeated mitotic divisions to form the endosperm, a nutritive tissue that supports the developing embryo. In most angiosperms, this tissue is triploid, resulting from the fusion of two polar nuclei and one male gamete during fertilization.

Exalbuminous or non-endospermic seeds are those where the endosperm is fully absorbed by the embryo during its development. Consequently, the food reserves are stored within the cotyledons rather than in a separate endosperm tissue.

Wheat seeds are classified as albuminous (or endospermic) because they retain a significant amount of endosperm at maturity. This stored food material is utilized by the embryo during the germination process to support early growth before the seedling becomes autotrophic.

Seeds that store food in the endosperm for the developing embryo are referred to as either albuminous or endospermic seeds. Both terms are synonymous in botanical terminology, describing the same physiological state of the mature seed.

In a developing plant embryo, the embryonal axis is divided into two main regions relative to the cotyledons. The hypocotyl is the segment of the axis situated below the cotyledonary node, which eventually develops into the root system. Conversely, the epicotyl is the portion located above the cotyledons, which gives rise to the shoot system, including the plumule and the first true leaves.

The radicle is the embryonic root located at the tip of the hypocotyl. It is the first part of the seedling to emerge during germination and is responsible for anchoring the plant and absorbing water and minerals.

Bean seeds are classified as exalbuminous or non-endospermic seeds. In these seeds, the endosperm is completely consumed by the developing embryo during seed maturation. Consequently, the food reserves are stored within the cotyledons rather than in a separate endosperm tissue. This is a characteristic feature of many dicotyledonous plants, distinguishing them from albuminous seeds where the endosperm persists.

The epicotyl is the portion of the embryonic stem located above the attachment point of the cotyledons. It eventually develops into the shoot system of the plant, including the leaves and the stem above the cotyledonary node.

In dicot embryogenesis, the zygote undergoes a series of divisions. A key stage in this process is the formation of an eight-celled structure known as the octant stage, which is a fundamental developmental milestone in the formation of the dicot embryo.