(A) Meadow vole (B) White rhino In 1 week, the vole eats about six times its bod

Question

(A) Meadow vole (B) White rhino In 1 week, the vole eats about six times its body weight to meet its energy needs 650 kg 1900 kg /s The thino, by contrast, eats only one-third of its body weight in 1 week to meet its energy needs 175 g 30 g 56. refer to the figure above. This demonstrates that a. voles eat more than rhinos. b. the energy needs of the two species are not proportional to body size. c. the rhino is more sedinteary and therefore needs less food d. the vole has a lower digestive efficiency than a rhino. 57. In winter, some birds stand on frozen ponds and lakes. How do they prevent their feet from freezing while simultaneously preventing excessive heat loss? a. Through the mechanism of countercurrent heat exchange in their legs b. By alternately standing on one foot and then the other c. By gular fluttering d. By metabolizing brown adipose tissue in their lower legs and feet 58. An animal is sweating profusely. The sweat off the animal's body surface affects it by the animal due to latent heat of a. cooling; vaporization b. heating; vaporization c. cooling; condensation d. heating, condensation

Explanation / Answer

Answers -

56- correct answer is - C - the rhino is more sedinteary and therefore needs less food.

Explanation - As according to given figure vole eats more then its body weight as compared to rhino because it needs more energy to perform more movements and as compared to their nature vole are not much sedinteary.

57 - correct answer is - A - through the mechanism of counter current..

Explanation - by this mechanism the birds keep their temperature at legs above zero degree and keep on standing at frozen pond.

58 - correct answer is - A - cooling, vaporization.

Explanation - as sweat vaporize it will lead to cooling of surface area of the body. As same mechanism when you feel cool as you spray perfume or water at your skin and it gets vaporize by heatvof body making you feel cool.

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