Which of the following animals is not viviparous?
(a) Whale
(b) Flying fox (Bat )
(c) Elephant
(d) Platypus

Options

A. Whale
B. Flying fox (Bat )
C. Elephant
D. Platypus

Answer

To determine which of the following animals is not viviparous, we need to understand the terms "viviparous" and "oviparous."

1. **Definition of Viviparous and Oviparous**:
- Viviparous animals are those that give birth to live young rather than laying eggs.
- Oviparous animals lay eggs, from which the young hatch.

2. **Analyzing the Options**:
- **(a) Whale**: Whales are mammals that give birth to live young. Therefore, they are viviparous.
- **(b) Flying fox (Bat)**: Bats are also mammals and give birth to live young, making them viviparous.
- **(c) Elephant**: Elephants are large mammals that also give birth to live young, thus they are viviparous.
- **(d) Platypus**: The platypus is a unique mammal that lays eggs, which makes it oviparous.

3. **Conclusion**:
- Among the given options, the platypus is the only animal that is not viviparous. Therefore, the correct answer is **(d) Platypus**.