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A general increase in the average body mass of animal population within a species with latitude is known as

 

Option: 1

Allen's rule 


Option: 2

Bergmann's rule


Option: 3

Allee effect


Option: 4

Hamilton's rule


Answers (1)

best_answer

Bergmann's rule states that within a species, individuals in populations found in colder environments or at higher latitudes tend to have larger body sizes compared to individuals in populations found in warmer environments or at lower latitudes. This phenomenon is believed to be an adaptation to colder climates, where larger body size helps in reducing heat loss and maintaining body temperature more effectively.

The underlying reason behind Bergmann's rule is that larger animals have a smaller surface area-to-volume ratio, which helps them retain heat better in colder environments. This pattern is observed in many animal species, including mammals, birds, and reptiles, although there are exceptions and variations depending on other factors such as ecological niche, evolutionary history, and habitat characteristics. 

Hence, the correct answer is option 2 

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Gunjita

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