caca
it extracts food and oxygen from the uterine wall of the mother to the fetus.
No, pouched mammals do not have placenta.
eveloment of Placenta .
Yes. They are a placental mammal.
No, tuna fish do not have placentas. The placenta is part of mammal physiology, and fish are not mammals.
NIGG3RS, or placenta
Of or pertaining to the placenta; having, or characterized by having, a placenta; as, a placental mammal., Of or pertaining to the Placentalia., One of the Placentalia.
I the mammal is a monotreme, it developes in an egg. If the mammal is in the marsupial group, it develops in a pouch on its mother. If it is a placental mammal, it develops in the placenta.
Both of these
Placenta through the process of diffusion
If the placenta don't function the embryo will die.
For nine months the placenta feeds and nourishes the fetus while also disposing of toxic waste.