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| 1 | |
Energy from light is converted into chemical energy for organisms by |
| | A) | herbivores. |
| | B) | carnivores. |
| | C) | producers. |
| | D) | detritivores. |
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| 2 | |
As energy is transferred from one trophic level to the next, substantial amounts of energy are lost to/as |
| | A) | undigestible biomass. |
| | B) | heat. |
| | C) | metabolism. |
| | D) | All answers are correct. |
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| 3 | |
The number of carnivores found at the top of an ecological pyramid is limited by |
| | A) | the number of organisms below the top carnivores. |
| | B) | the number of trophic levels below the top carnivores. |
| | C) | the amount of biomass below the top carnivores. |
| | D) | the amount of energy transferred to the top carnivores. |
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| 4 | |
Hydrologists, scientists who study the movements and cycles of water, refer to the return of water from the ground to the air as evapotranspiration. The first part of the word refers to evaporation. The second part of the word refers to transpiration, which is evaporation of water |
| | A) | from plants. |
| | B) | through animal perspiration. |
| | C) | off the ground shaded by plants. |
| | D) | from the surface of rivers. |
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| 5 | |
The carbon cycle includes |
| | A) | the gathering of materials to make proteins. |
| | B) | the gathering of light energy through photosynthesis. |
| | C) | the gathering of phosphorus to make DNA. |
| | D) | No answer is correct. |
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| 6 | |
The element phosphorus is needed in organisms to build |
| | A) | proteins. |
| | B) | carbohydrates. |
| | C) | ATP. |
| | D) | steroids. |
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| 7 | |
A rain shadow results in |
| | A) | extremely wet conditions due to loss of moisture from winds rising over a mountain range. |
| | B) | dry air moving toward the poles that cools and sinks in regions 15° to 30° north/south latitude. |
| | C) | global polar regions that rarely receive moisture from the warmer, tropical regions, and are therefore dryer. |
| | D) | desert conditions on the down-wind side of a mountain due to increased moisture-holding capacity of the winds as the air heats up. |
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| 8 | |
As one travels from northern Canada south to the United States, the timberline increases in elevation. This is because as latitude |
| | A) | increases, temperature decreases. |
| | B) | decreases, temperature decreases. |
| | C) | increases, humidity decreases. |
| | D) | decreases, humidity increases. |
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| 9 | |
In freshwater lakes during the summer, layers of sudden temperature change called _____________ form. |
| | A) | eutrophy |
| | B) | thermal restratification |
| | C) | oligotrophy |
| | D) | thermocline |
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| 10 | |
A temperate evergreen forest can exist in the southwest deserts of the United States if the forest exists |
| | A) | in desert riparian (stream or river) areas. |
| | B) | near natural springs. |
| | C) | near the top of a desert mountain range. |
| | D) | in the desert flatlands. |
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