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Reproduction in humans
Higher
3 marks
Describe the role of the placenta during pregnancy.
A
Allows O2/glucose from mother and CO2/urea from fetus to diffuse across; produces hormones; acts as partial barrier
B
Pumps blood directly from mother to fetus
C
Stores nutrients for the baby and releases them all at birth
D
Filters all harmful substances from mother's blood
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Reproduction in humans — Biology (0610) | Smartzi