give reasons why placenta has villi on embryo side
Reason:
Villi allows more area for the intake of food and oxygen from the mother's blood by the developing foetus. It also helps in the transfer of waste materials from the foetus to the mother's blood.
Villi allows more area for the intake of food and oxygen from the mother's blood by the developing foetus. It also helps in the transfer of waste materials from the foetus to the mother's blood.