What is one function of the placenta?
Answer and explanation
Correct answer: B. It exchanges nutrients, oxygen and wastes between mother and foetus
- Step 1: Substances diffuse across the placenta without the bloods mixing.
Answer
It exchanges nutrients, oxygen and wastes between mother and foetus.
Why not the others: It mixes the mother's blood directly with the blood of the foetus: the two bloodstreams stay separate. It produces the eggs that are used for the next pregnancy: eggs are produced in the ovaries. It stores the milk that will be fed to the newborn baby: milk is produced in the mammary glands.
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