A) Bergman's rule
B) Alien's rule
C) Jordan's rule
D) Rensch's rule
Correct Answer: B
Solution :
Alien's rule Animals of colder areas have shorter extremities (eg, tail, ears, head) as compared to animals of warmer areas. Bergman's rule Birds and mammals of colder areas are larger in size as compared to their equivalents in warmer areas. Jordan's rule Fish size as well as number of vertebrae increase in colder areas as compared to warmer areas. Rensch's rule Birds of colder areas have narrow and acuminate wings while those of warmer areas have broader wings.
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