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| 1 | |
Carrying capacity is… |
| | A) | the smallest population size that an ecosystem can sustain. |
| | B) | the largest population size that an ecosystem can sustain. |
| | C) | the unlimited growth of a population in a specific ecosystem. |
| | D) | is not dependent on the resources available. |
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| 2 | |
Population growth in a natural ecosystem is… |
| | A) | always limited by the amount of sunlight available. |
| | B) | never limited by the amount of water resources available. |
| | C) | not affected by factors such as food, water, and sunlight. |
| | D) | limited by factors such as food, water, and sunlight. |
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| 3 | |
Population growth in terrestrial ecosystems is often limited by… |
| | A) | oxygen. |
| | B) | carbon. |
| | C) | hydrogen. |
| | D) | water. |
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| 4 | |
Populations in aquatic environments stay stable due to limiting factors that include… |
| | A) | increasing oxygen supply, low food supply, predators, and disease. |
| | B) | decreasing oxygen supply, high food supply, and an increase in living space. |
| | C) | decreasing oxygen supply, low food supply, predators, and disease. |
| | D) | decreasing oxygen supply, high food supply, and removal of predators. |
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| 5 | |
Biotic factors that limit populations in a forest ecosystem could include… |
| | A) | parasites, predators and prey, and plant competitors. |
| | B) | predators and prey, plant competitors, and nutrients. |
| | C) | living space, prey, and competition for resources. |
| | D) | Water, living space, and nutrients. |
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| 6 | |
Parasites affect their hosts by… |
| | A) | competing for living space. |
| | B) | providing resources. |
| | C) | weakening their hosts. |
| | D) | killing their hosts. |
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| 7 | |
Predator and prey relationships… |
| | A) | increase competition among the prey population. |
| | B) | decrease competition among the prey population. |
| | C) | affect only the prey population. |
| | D) | affect only the predator population. |
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