Which one of the following is oviparous?
a. Platypus
b. Flying fox (Bat)
c. Elephant
d. Whale
The answer is option (a), platypus.
Explanation:
Platypus is a primitive mammal which shows many characteristics of their reptilian descent, such as oviparity. This means that these lay eggs. Rest all three animals,i.e., flying fox, elephant and whale are viviparous mammals and give birth to young ones.