Question

Which one refers to Allen's rule

• A. If stressful conditions are localised or remain only for a short duration, an organism either migrates or suspends itself
• B. Mammals from colder climates have shorter ears and limbs to minimise heat loss
• C. An organism can move from a stressful habitat to a more hospitable area and return when the stressful period is over
• D. Low atmospheric pressure in higher altitudes results in altitude sickness

Answer 1

Answer: (B)

Allen's rule states that mammals from colder climates generally have shorter ears and limbs to minimize heat loss.

So the correct option is 'Mammals from colder climates have shorter ears and limbs to minimize heat loss'