The cotyledon (or cotyledons)
The endosperm does. It acts much like yolk in an egg does for the embryo developing in the egg: provides the necessary nutrients for the developing embryo to grow from.
to provide nourishment to the developing embryo in a seed
the roots
the developing embryo is nourished by yolk
Uterus.
It provides aqueous medium and protection .
The endosperm provides nutrients for the developing plant embryo. It primarily stores carbohydrates, proteins, and fats to support the growth and development of the embryo until it can photosynthesize and produce its own food.
The purpose is to provide nourishment to a developing embryo in the seed.
The yolk sac turns into the placenta which provides the nourishment
The eggshell provides protection.
The developing embryo takes its nourishment from the yolk inside the egg. The embryo doesn't need air until it is ready to break out of its shell.
the endosperm is in the gymnosperm 'naked seeds' and the angiosperm flowering plants. in gymno - haploid (n) gives nutrients to the embryo the only difference with the angiosperm is that its not haploid (n) but triploid (3n)