Which of the following rules states thet with increase of every `10^(@)C` temperature , the rate of metabolic process gets doubled

Options

A. Van't Hoff's rule
B. Bergman's rule
C. Allen's rule
D. Jordan's rule.

Answer

To answer the question regarding which rule states that with an increase of every 10°C in temperature, the rate of metabolic processes doubles, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Options**: The question provides four options:
- One Half Rule
- Bergman's Rule
- Allen's Rule
- Jordan's Rule

2. **Understand Each Rule**:
- **One Half Rule**: This rule states that the rate of metabolic reactions increases with rising temperature, specifically that for every 10°C increase in temperature, the metabolic rate doubles.
- **Bergman's Rule**: This rule relates to the size of organisms in relation to latitude, stating that organisms in colder climates tend to be larger.
- **Allen's Rule**: This rule discusses the relationship between the shape of organisms and temperature, indicating that animals in colder climates have shorter limbs and extremities.
- **Jordan's Rule**: This rule describes the relationship between water temperature and the characteristics of fish species, indicating an inverse relationship.

3. **Determine the Correct Answer**: Based on the definitions provided, the One Half Rule is the only one that specifically mentions the doubling of metabolic rate with a 10°C increase in temperature.

4. **Conclusion**: Therefore, the correct answer to the question is **One Half Rule**.

### Final Answer:
The rule that states that with an increase of every 10°C temperature, the rate of metabolic process gets doubled is **One Half Rule**.

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