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Question

After fertilisation, the resulting cell which gives rise to a new individual is the


A

embryo

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B

ovum

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C

foetus

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D

zygote

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Solution

The correct option is D

zygote


The correct option is D

Explanation of the correct option:

  1. Post fertilisation (i.e. fusion of sperm and the egg), zygote is formed.
  2. It is the initial phase of formation of a new individual.
  3. All the multicellular animals start their life from a single cell known as zygote.
  4. A zygote is the first diploid cell that is formed by the fusion of male and female gametes resulting in the formation of an embryo

Explanation of the incorrect options:

Option A:

Embryo is the early stage of development of a zygote.

Option B:

Ovum is the female gamete.

Option C:

Foetus is the later stage of development of the zygote.

Final answer: After fertilisation, the resulting cell which gives rise to a new individual is the zygote.


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