Question

Internal fertilisation does not occur in ______ and ______.

• A. humans
• B. fish
• C. frogs
• D. cows

Answer 1

Answer: (B), (C)

The correct options are
B

fish

C

frogs

Fertilisation that takes place inside the female body is called internal fertilisation. Humans and cows exhibit internal fertilisation.
In fishes and frogs, fertilisation takes place outside the female body. Both males and females release their gametes into the surrounding (mainly water). Fertilisation takes place in the surrounding medium and the zygote formed develops into an individual outside the body of the parents. This type of fertilisation is known as external fertilisation.