Biology

Differentiate between External fertilization and internal fertilization

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Sl. No.	External fertilization	Internal fertilization
1.	When the sperm fuses with the ovum outside the female body it is called external fertilization.	When the sperm fuses with the ovum inside the female body it is called internal fertilization.
2.	It is seen in aquatic habitat, for example fish and frog.	It is found in mammals, birds and reptiles.

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