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A zygote and a foetus differ in TWO important ways. Which of the following BEST captures both differences?
AA zygote is a single cell formed at fertilisation; a foetus is a multi-cellular developing baby in which all body parts are identifiable
BA zygote is found in the ovary; a foetus is found in the oviduct
CA zygote is much bigger than a foetus; a zygote can move but a foetus cannot
DA zygote is produced by asexual reproduction; a foetus is produced by sexual reproduction
Answer & Solution
Correct answer: A. A zygote is a single cell formed at fertilisation; a foetus is a multi-cellular developing baby in which all body parts are identifiable
A zygote is the single fertilised cell formed at the moment sperm and egg fuse. After many divisions and several weeks of development, the multi-cellular embryo becomes a foetus — the stage at which all body parts (limbs, eyes, ears, organs) are recognisably present in the developing baby.
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