Question

Out of human beings, cows, dogs, hens. Hen is the animal which is odd one out.
The reason for this is

• A. It undergoes internal fertilisation.
• B. It is oviparous.
• C. It is viviparous.
• D. It undergoes external and internal fertilisation.

Answer 1

The correct option is B It is oviparous.

• Hen is an oviparous animal. It lays the egg with a thick calcium shell. It can reproduce by internal fertilization so that sperm fertilize the egg without passing through thick calcium shell.

So, the correct answer is option B.