Pouched mammals attained diversity in

Options

A. New Zealand
B. South Africa
C. Australia
D. South America

Answer

**Step-by-Step Solution:**

1. **Understanding Pouched Mammals**: Pouched mammals, also known as marsupials, belong to the class Mammalia. They are characterized by the presence of a pouch used to carry their young.

2. **Identifying the Regions**: The question asks in which region pouched mammals attained diversity. The options provided are New Zealand, South Africa, Australia, and South America.

3. **Endemic Nature of Marsupials**: Marsupials are primarily endemic to Australia. This means that they are native to this region and are not found naturally in other parts of the world.

4. **Examples of Marsupials**: Common examples of marsupials include kangaroos and koalas, which are well-known species that illustrate the diversity of this group.

5. **Reproductive Characteristics**: Marsupials give birth to underdeveloped young, which are carried in the pouch until they are more mature. This reproductive strategy is significant in their evolutionary success in Australia.

6. **Historical Context**: Historically, Australia was part of the Asian continent. After the evolution of protherians (egg-laying mammals) from reptiles, Australia separated from Asia. This isolation allowed marsupials to thrive without competition from other mammals.

7. **Conclusion**: Due to the lack of competition from other mammals in Australia, marsupials survived and diversified in this region. Therefore, the correct answer to the question is that pouched mammals attained diversity in Australia.

**Final Answer**: Pouched mammals attained diversity in Australia.

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