Albuminous seeds store their reserve food mainly in:

Step-by-step solution

The seed which store food materials in endosperm are called endospermic or albuminous seed. Cotyledon is the seed leaf within the embryo of a seed. These stored nutrients are supplied to the seedling during germination. Upon germination, the hypocotyl pushes the cotyledons above the ground to develop. It eventually becomes part of the plant stem, while radicle forms roots. Perisperm is the remnant of nucellus which are persistent. It surrounds, stores food and provide nourishment to the embryo in an angiosperm seed