This may be wrong, but I believe that it comes with the embryo it's self and provides nutrients.
During development, an embryo is embedded in the the endometrium during the first week of pregnancy. The endometrium is the innermost muccous membrage of the uterus. The embryo becomes implanted in it, then the surrounding tissue forms sinuses that exchange nutrients and later becomes the placenta.
An embryo during the late stages of development is known as a fetus.
The embryo is obtains nutrients by drawing them from the mother's blood. Thus, whatever the mother takes in that alters chemical composition of her blood can potentially affect the embryo.
The seed embryo is nourished by stored starch in the plant.
Yes it does.
the thing that helps you live
Yes; the mother gives nutrients to the embryo that are essential for its growth.
hahahhaha :)
Yes it does.
Yes it does.
embryo
The Placenta.