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Mammals of colder areas generally have s...

Mammals of colder areas generally have shorter extremities in comparison to the tropical mammals. This statement comes under the

A

Allen's rule

B

Jordan's rule

C

Bergman's rule

D

Gloger's rule

Text Solution

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The correct Answer is:
To solve the question regarding the statement about mammals of colder areas having shorter extremities compared to tropical mammals, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Statement**: The statement discusses a biological observation regarding mammals in different climates. It indicates that mammals in colder areas tend to have shorter extremities than those in warmer, tropical regions. 2. **Identify the Concept**: This observation relates to a principle in biology that explains how organisms adapt to their environments. The principle that describes this phenomenon is known as "Allen's Rule." 3. **Research Allen's Rule**: Allen's Rule states that endothermic (warm-blooded) animals in colder climates tend to have shorter limbs and body extremities than those in warmer climates. This adaptation helps to conserve body heat. 4. **Differentiate from Other Rules**: It’s important to distinguish Allen's Rule from other ecological rules: - **Bergmann's Rule**: Larger body sizes are found in colder climates. - **Gloger's Rule**: Heavily pigmented animals are found in warmer, more humid environments. - **Jordan's Rule**: Relates to fish scales and temperature. 5. **Conclude the Answer**: Based on the understanding of Allen's Rule, we conclude that the statement about mammals of colder areas having shorter extremities compared to tropical mammals is indeed a reflection of Allen's Rule. ### Final Answer: The statement comes under **Allen's Rule**.
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