Which is not true regarding biodiversity?

Options

A. It provides more productive ecosystem
B. It changes along the altitude
C. Highest in tropical regions
D. Increases with the increase in latitude

Answer

To determine which statement regarding biodiversity is not true, we will analyze each statement provided in the question.

### Step-by-Step Solution:

1. **Statement Analysis**:
- **Statement 1**: "It provides a more productive ecosystem."
- **Analysis**: This statement is true. Higher biodiversity generally leads to more productive ecosystems because a variety of species can utilize resources more efficiently.

2. **Statement 2**: "Changes along the altitudes."
- **Analysis**: This statement is also true. Biodiversity tends to increase with altitude until it reaches a peak (around 1300 to 1800 meters) and then decreases.

3. **Statement 3**: "Highest in the tropical region."
- **Analysis**: This statement is true as well. Tropical regions, being closer to the equator, receive more sunlight, which supports higher biodiversity.

4. **Statement 4**: "Increases with the increase in latitude."
- **Analysis**: This statement is false. Biodiversity generally decreases as latitude increases. As we move towards higher latitudes, the climate becomes colder and less hospitable for many species, leading to a decrease in biodiversity.

### Conclusion:
The statement that is not true regarding biodiversity is: **"Increases with the increase in latitude."**

Thus, the correct answer is **option number B**.

---