The mother does. The embryo attaches to the uterine lining (called implantation) then secretes an enzyme to breakdown the cells of the lining as it burrows into the uterus. Maternal uterine cells then develop and surround the entire embryo, soon maternal blood vessels unite with the embryo to nourish it and remove waste products. This occurs about one week after fertilization and will provide nourishment throughout the first trimester until the embryo reaches the fetal stage at which time the placenta takes over through the umbilical cord.
Follicle
The yolk sac turns into the placenta which provides the nourishment
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.
the developing embryo is nourished by yolk
to provide nourishment to the developing embryo in a seed
PLACENTA
A yolk sac is a sac attached to an embryo, which provides early nourishment for bony fish, sharks, reptiles, birds, and primitive animals.
Embryo gets its food via placenta .
placenta
Amniotic sac
The organ that provides the nourishment is the placenta but the umbilical cord transports the nutrients to the fetus.
The purpose is to provide nourishment to a developing embryo in the seed.