Animals that undergo internal fertilization, such as human beings, cats, dogs, cows and elephants are ________.

Options

A. Oviparous animals
B. viviparous animals
C. Both (a) and (b)
D. None of them

Answer

To answer the question about animals that undergo internal fertilization, we can follow these steps:

1. **Understand the Types of Fertilization**: There are two main types of fertilization in animals: internal and external. Internal fertilization occurs inside the female's body, while external fertilization occurs outside.

2. **Identify Examples of Internal Fertilization**: The question provides examples of animals that undergo internal fertilization, such as humans, cats, dogs, cows, and elephants.

3. **Define the Term for Animals with Internal Fertilization**: Animals that undergo internal fertilization and give birth to live young are classified as viviparous animals.

4. **Eliminate Incorrect Options**: The question mentions "oviparous animals," which are egg-laying animals that do not have internal fertilization. Therefore, this option is incorrect.

5. **Conclude with the Correct Answer**: Based on the definitions and examples provided, the correct term for animals that undergo internal fertilization, like the ones mentioned, is "viviparous animals."

Final Answer: Animals that undergo internal fertilization, such as human beings, cats, dogs, cows, and elephants are **viviparous animals**.