Question

In which of the following animals, fertilisation is external?

• A. Birds and fish
• B. Amphibians and fish
• C. Reptiles and fish
• D. Reptiles and birds

Answer 1

Answer: (B)

Amphibians and fish

Fertilisation is the process in which the male and the female gametes fuse to form the zygote which develops to form a new individual. The re are two forms of fertilisation, internal and external. The external type of fertilisation is observed in the fishes and amphibians. The eggs are laid in the water by the females are fertilised by the male gametes released.

Thus, the correct answer is option B.