Both
Placenta
Embryo gets its food via placenta .
placenta which is between the mother and the embryo.
The embryo attaches to the mother
The mammal embryo receives its nutrients from the mother through the placenta. The placenta allows nutrients to travel from the mother's system to the embryo's, and for waste products to leave the embryo's system so they can be disposed of by the mothers.
placenta
Placenta
The placenta.
not sure what you mean by "which of these" but the umbilical cord connects the embryo to the mother.
The highly vascular structure that acts as a communication between the mother and the embryo is called the placenta.
food and water
glucose