Difference Between Zygote, Embryo And Fetus
Difference Between Zygote, Embryo And Fetus
A zygote forms after fertilisation. A zygote becomes an embryo. And finally, an embryo becomes a foetus. The main differences between zygote embryo and foetus are given on the next page.
| S. No | Zygote | Embryo | Foetus |
|---|---|---|---|
| 1. | A zygote is formed by the fusion of male and female gametes (sperm and egg) | An embryo is formed by the repeated cell division of a zygote. | A foetus is formed by the growth of an embryo. |
| 2. | A zygote is the beginning of the formation of a baby. | An embryo is an unborn baby in the uterus in the early stages of development (up to 8 weeks) | A foetus is an unborn baby in the uterus in the later stages of development (after 8 weeks till birth). |
| 3. | A zygote is a single cell. It is smaller than a full stop (.) | An embryo is multicellular. The body features of growing baby in the embryo are not much developed. | A foetus is also multicellular. The body features of developing baby (like hands, legs, head, eyes and ears, etc.) can be identified. |
Which of the following are correct : (a) A zygote is the beginning of the formation of a baby. (b) An embryo is formed by the repeated cell division of a zygote. (c) A foetus is formed by the growth of an embryo. | |||
| Right Option : D | |||
| View Explanation | |||
An embryo is formed by the repeated ______________ division of a zygote. | |||
| Right Option : C | |||
| View Explanation | |||
Which of the following are correct : (a) A zygote is formed by the fusion of male and female gametes (sperm and egg) (b) A embryo is formed by the fusion of male and female gametes (sperm and egg) | |||
| Right Option : A | |||
| View Explanation | |||
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