The variety of plants and animals present in a certain region or habitat is called its____________

Options

A. Biodiversity
B. Flora
C. Ecosystem
D. Biome

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the term that describes the variety of plants and animals present in a specific region or habitat.

2. **Identifying Key Terms**: The key terms in the question are "variety of plants and animals" and "region or habitat."

3. **Exploring Relevant Concepts**:
- **Biodiversity**: This term refers to the variety of life in a particular habitat or ecosystem, including the different species of plants and animals and their interactions.
- **Flora**: This term specifically refers to plant species in a region, but does not encompass animals.
- **Ecosystem**: This includes both biotic (living) and abiotic (non-living) components but is a broader term that does not specifically refer to the variety of species.
- **Biome**: This term refers to large geographical areas characterized by specific climate conditions and types of plants and animals, but it is not the term that directly answers the question.

4. **Choosing the Correct Answer**: Based on the definitions and explanations, the term that best fits the description of the variety of plants and animals in a region is "biodiversity."

5. **Final Answer**: The variety of plants and animals present in a certain region or habitat is called its **biodiversity**.

---