The organ through which food and oxygen are supplied to the human embryo and which also prevents harmful materials from reaching the embryo is the
amnion
uterus
placenta
umbilical cord
fallopian tube
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The placenta aids in the transfer of food and oxygen to the fetus through diffusion , therefore the blood of the baby and the mother do not mix

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The umbilical cord is considered both the physical and emotional attachment between mother and fetus. This structure allows for the transfer of oxygen and nutrients from the maternal circulation into fetal circulation while simultaneously removing waste products from fetal circulation to be eliminated maternally.

the correct answer is option D becouse, the umbilical cord is also transper nutrient and oxygen from the mother to the embryo like placenta but the diffrent is that placenta is also prevent the harmful substance from reaching the embryo at thesame time, so D is the correct answer.


