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Our Environment
Question
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Distinguish between the following:
Internal and External fertilisation

Answer

Internal fertilisation

External fertilisation

The sperms are injected inside the body of the female and fertilisation of the ovum takes place inside the body of the female. Example: Mammals, insects, spider

Both male and female organisms shed their gametes in the medium (water) and the ovum is fertilised outside the body of the female.

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