Match the following: Set –I Set – II a Rancher's rule 1 Body size b Bergman's rule 2 Wings c Allen's rule 3 Vertebra number c Jordan's rule 4 Organ size

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(i) Bergman's rule: Warm-blooded animals (birds and mammals) have larger body size in cold climate than in hotter areas.

(ii) Allen's rule: Extremities (legs, ears, tail, mouth) of warm blooded animals become smaller in colder areas as compared to animals of warmer areas.

(iii) Rancher's rule: In a colder climate, birds possess narrow and acuminate wings as compared to broader wings of birds found in warmer areas.

(iv) Jordan's Rule: As the temperature is lowered, some fishes possess a larger size with a larger number of vertebrae.

Zoology - Organisms and Populations Question with Solution | TestHub

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Doubts & Discussion

	Set –I		Set – II
a	Rancher's rule	1	Body size
b	Bergman's rule	2	Wings
c	Allen's rule	3	Vertebra number
c	Jordan's rule	4	Organ size