HORTICULTURE

Detailed explanation-1: -The embryo within the embryosac gets nutrition from the nucellus . The nucellus is known to act as a food reserve for the growing embryo.

Detailed explanation-2: -Cotyledon is the part of a seed that stores food for the embryo.

Detailed explanation-3: -Endosperm supports embryogenesis not only by providing nutrients and growth regulators but also by regulating the embryo growth and maturation process through mobile protein signals.

Detailed explanation-4: -It originates from a fertilization event parallel to the fertilization that gives rise to the embryo. The endosperm nurtures embryo development and, in some species including cereals, stores the seed reserves and represents a major source of food for humankind.

Detailed explanation-5: -Endosperm serves as a food supply for the embryo and seedling; depending on the species, it may be rich in oils, starch, and/or protein. In some species, the majority of the endosperm is absorbed by the developing embryo and stored in the cotyledons.