Question 3 In the list of animals given below, hen is the odd one out. The reason for this is human being, cow, dog, hen
(a) It undergoes internal fertilization (b) It is oviparous (c) It is viviparous (d) It undergoes external fertilization
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Solution
Ans) Option (b) Hens are oviparous because they lay eggs and these eggs hatches outside the females body. Whereas in humans, cows and dogs the female gives birth to young ones without laying eggs.