Question

Which of the following does not exhibit internal fertilization?

• A. Frog
• B. Lizard
• C. Cow
• D. Crow

Answer 1

The correct option is A Frog

Fishes and amphibians exhibit external fertilization wherein fertilization occurs outside the body of the organism in the external medium. Frog being an amphibian, exhibits external fertilization.

Reptiles, birds and mammals exhibit internal fertilization wherein fertilization occurs inside the body of the organism. The lizard being a reptile, the cow being a mammal and the crow being a bird show internal fertilization.