What is Allens rule give example?
Thus, having shorter ones help to decrease heat loss. One of the most classical examples of the Allen’s rule is the correlation between ear length and air temperature for hares (genus Lepus) and foxes.
What is Allens rule?
The principle holding that in a warm-blooded animal species having distinct geographic populations, the limbs, ears, and other appendages of the animals living in cold climates tend to be shorter than in animals of the same species living in warm climates.
What is Allen’s rule CBSE 12?
Allen’s rule is an ecogeographical rule which states that the limbs, ears and other appendages of animals living in colder climate are shorter than the animals of same species living in warmer regions.
Is Allen’s rule true?
Allen’s rule (relatively shorter appendages in colder environments) remains largely unsupported and there remains much controversy whether reduced surface area of appendages provides energetic savings sufficient to make this morphological trend truly adaptive.
What is burgman rule?
Bergmann’s rule states that organisms at higher latitudes should be larger and thicker than those closer to the equator to better conserve heat, and Allen’s rule states that they will have shorter and thicker limbs at higher latitudes.
Which is the best example that explains Allens rule?
So the correct option is ‘Mammals from colder climates have shorter ears and limbs to minimize heat loss’
Is Polar seal example of Allen’s rule?
Mammals from colder climates generally have shorter ear and limbs to minimize heat loss, this is called Allen’s Rule. In the polar seas, aquatic mammals like seals have a thick layer of fat below their skin that acts as an insulator and reduces the loss of body heat. So, the correct answer is option A.
What is Allen’s rule Toppr?
What are Bergmann and Allen’s rules?
What is Allen’s rule Shaalaa?
Allen’s Rule describes mammals in colder climates have shorter snout, ears and tail.
What is Bergman law?
Bergmann’s Rule, in zoology, principle correlating external temperature and the ratio of body surface to weight in warm-blooded animals. Birds and mammals in cold regions have been observed to be bulkier than individuals of the same species in warm regions.