Science
Give two differences between a zygote and a foetus.
Reproductive System
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Answer
| Zygote | Foetus |
|---|---|
| Zygote is formed by the fusion of sperm and egg during fertilisation. | Foetus is the stage of the embryo in which all the body parts can be identified. |
| Zygote is unicellular. | Foetus is multicellular. |
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The number of nuclei present in a zygote is
- none
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- two
- four
Indicate whether the following statements are True or False.
(a) Oviparous animals give birth to young ones.
(b) Each sperm is a single cell.
(c) External fertilisation takes place in frog.
(d) A new human individual develops from a cell called gamete.
(e) Egg laid after fertilisation is made up of a single cell.
(f) Amoeba reproduces by budding.
(g) Fertilisation is necessary even in asexual reproduction.
(h) Binary fission is a method of asexual reproduction.
(i) A zygote is formed as a result of fertilisation.
(j) An embryo is made up of a single cell.
Define asexual reproduction. Describe two methods of asexual reproduction in animals.
In which female reproductive organ does the embryo get embedded?