Which of the following is not a fundamental reason for greater biodiversity in tropics as compared to that of temperate regions ?

Options

A. Tropical latitudes have remained relatively undisturbed for millions of years
B. Temperate environments , unlike tropical ones, are less seasonal, relatively more constant and predictable
C. Temperate regions were subject to frequent glaciations in the past
D. There is more solar energy available in the tropics which contributes to higher productivity

Answer

To solve the question regarding the fundamental reasons for greater biodiversity in the tropics compared to temperate regions, we need to analyze each option provided and determine which one is not a fundamental reason.

### Step-by-Step Solution:

1. **Understanding Biodiversity**: Biodiversity refers to the variety of life in a particular habitat or ecosystem. The tropics are known for their high levels of biodiversity compared to temperate regions.

2. **Analyzing Each Option**:
- **Option 1**: "Tropical latitudes have remained relatively undisturbed for millions of years."
- This statement is true. The tropics have experienced fewer catastrophic events, allowing species to thrive and evolve over long periods.

- **Option 2**: "Temperate environments, unlike tropical ones, are less seasonal, relatively more constant and predictable."
- This statement is false. Temperate regions are characterized by seasonal variations (winter, summer, autumn, spring) and are not as constant or predictable as tropical regions.

- **Option 3**: "Temperate regions were subject to frequent glaciations in the past."
- This statement is true. Temperate regions have experienced glaciation events, which have disrupted ecosystems and biodiversity.

- **Option 4**: "There is more solar energy available in the tropics which contributes to the higher productivity."
- This statement is true. The tropics receive more direct sunlight, which supports higher rates of photosynthesis and productivity.

3. **Identifying the Incorrect Statement**:
- From the analysis, Option 2 is the incorrect statement. It incorrectly describes temperate environments as being less seasonal and more predictable than tropical environments.

### Conclusion:
The answer to the question is **Option 2**: "Temperate environments, unlike tropical ones, are less seasonal, relatively more constant and predictable."

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