food and water
The Placenta. Source: Wiki Answers lol
In mammals through placenta and in reptiles and birds from yolk .
Placenta
PLACENTA
The seed embryo is nourished by stored starch in the plant.
It nourishes the embryo
placenta
The placenta.
The Placenta. Source: Wiki Answers lol
Some substances are filtered but the reason some might get through is that the placenta is connected to your baby through you so in affect any harmful substances you have eg alcohol the baby will also have
In mammals through placenta and in reptiles and birds from yolk .
An embryo plugs into it's Mothers blood supply through the placenta. The embryo gets all it's nutrition and oxgen through this connection.
Placenta
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.
The embryo attaches to the placenta when it reaches the uterus very early in a pregnancy.
The umbilical cord is attached to the placenta and the placenta is attached to the wall of the uterus
The embryo gets rid of waste when the mom feels sick and vomits.