1.Which consequences of allometric scaling, on the relative proportions of the l
ID: 145074 • Letter: 1
Question
1.Which consequences of allometric scaling, on the relative proportions of the long bones in an elephant vs. a mouse, are actual?
A. An elephant has a higher metabolic rate and therefore needs more bone tissue.
B. A mouse needs proportionally thicker bones because it burrows
C. An elephant needs proportionally thicker bones due to a larger body size.
D. In mammals, skeletons scale isometrically with body size, so their bones should be proportional.
E. A and C
2)Which of the following statements about allometric scaling of brain size vs body size is/are supported by evidence?
A. Large creatures require a greater proportion of their mass given to their brain, compared to smaller creatures.
B. Large creatures require proportionally smaller brains, relative to their body size, than smaller creatures.
C. Brains scale isometrically to body size.
D. Because large creatures have smaller metabolic rates, less energy is left over for brain activity, thus, the small brains.
E.Whales have the largest brains, relative to their bodies, of any animals.
3) Which of the following is a potential drawback of adaptation to an extreme environment such as high temperatures, high salinity, or extreme cold?
A. It often comes at the cost of imposing the inability to tolerate other extreme environments.
B. It often comes at the cost of a reduced competitive ability, in more moderate environments, compared to similar species that lack the specialized adaptations required for tolerating environmental extremes.
C. In terms of the law of tolerance, it means that an organism must evolve during the course of its lifetime to stay in the favorable range.
D. A and B
E. All of the above.
Explanation / Answer
Answers -
1. An elephant needs proportionally thicker bones due to a larger body size. (C)
2. Large creatures require a greater proportion of their mass given to their brain, compared to smaller creatures. (A)
3. All of the above
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