All of the following hypothesis support the existence of greater biological diversity in tropics than temprates except-

Options

A. Absence of frequent glaciations in tropics
B. Presence of seasonal variation in tropics
C. Receiving more solar energy by tropics
D. More predictable environment promoting greater niche specialization

Answer

To solve the question regarding which hypothesis does not support the existence of greater biological diversity in the tropics compared to the temperate regions, we can follow these steps:

### Step 1: Understand the Question
The question asks us to identify which of the provided hypotheses does not support the idea that the tropics have greater biological diversity than temperate regions.

### Step 2: Analyze Each Hypothesis
We need to evaluate each hypothesis presented in the options to determine if it supports the idea of greater biodiversity in the tropics.

1. **Absence of frequent glaciation in tropics**: This hypothesis suggests that because the tropics experience less glaciation, they maintain a higher temperature and thus support more species. This supports greater biodiversity in the tropics.

2. **Presence of seasonal variation in tropics**: This hypothesis implies that the tropics have significant seasonal variation. However, the tropics are characterized by relatively stable climates with less seasonal variation, which does not support greater biodiversity. This is likely the incorrect hypothesis.

3. **Receiving more solar energy by tropics**: This hypothesis states that the tropics receive more solar energy, which supports higher biological diversity. This is a valid point supporting greater biodiversity in the tropics.

4. **More predictable environment promoting greater niche specialization**: This hypothesis suggests that a stable environment allows for more niche specialization, which in turn supports greater biodiversity. This also supports the idea of greater biodiversity in the tropics.

### Step 3: Identify the Incorrect Hypothesis
From the analysis, we see that the second hypothesis (presence of seasonal variation in tropics) does not support the idea of greater biodiversity in the tropics, as it incorrectly describes the climatic conditions of the tropics.

### Conclusion
The hypothesis that does not support the existence of greater biological diversity in the tropics compared to temperate regions is the **presence of seasonal variation in tropics**.

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