AP Environmental Science Practice Quiz: Carrying Capacity

Correct Answer: A

Based on the provided content, carrying capacity is described as the limit that an ecosystem imposes on a population. Option A accurately defines this as the maximum population size an environment can sustain. Options B, C, and D describe initial population size, a component of exponential growth, and dieback, respectively.

Correct Answer: B

The content states, "When a population exceeds its carrying capacity (K), overshoot occurs." Since the deer population of 1,200 is greater than the carrying capacity of 1,000, it is in a state of overshoot. Dieback is a potential consequence of overshoot, not the state itself.

Correct Answer: C

The text explicitly states, "When a population exceeds its carrying capacity (K), overshoot occurs. Environmental impacts include resource depletion." This directly identifies resource depletion as a key environmental consequence of a population overshooting its K value.

Correct Answer: B

The content specifies that "A major ecological effect of population overshoot is dieback of the population (often severe to catastrophic)." This is the direct and often drastic consequence for the population itself after it has depleted its resources.

Correct Answer: B

The text explains that dieback occurs "because the lack of available resources leads to famine, disease, and/or conflict." This points directly to the scarcity of resources, which is a result of the initial overshoot, as the root cause of the population crash.

Correct Answer: B

The provided text explicitly lists the reasons for dieback as "famine, disease, and/or conflict," which are all consequences of resource scarcity. Option B directly reflects this information.

Correct Answer: B

The text establishes a clear causal link: a population first exceeds its carrying capacity (overshoot), which then leads to resource depletion and the subsequent dieback. Therefore, exceeding the carrying capacity is the critical event that precedes and causes the dieback.

Correct Answer: C

The core concept of carrying capacity, as described, is that it functions as a limit. It represents the maximum population that can be sustained by the ecosystem's resources, thus imposing an upper limit on how large that population can be in the long term.

Correct Answer: C

This scenario describes a population with unchecked growth in an environment with finite resources (nutrients). The principles outlined in the text suggest that such a population will exceed the carrying capacity (K). This overshoot will lead to the depletion of nutrients (resources), followed by a dieback or crash of the algae population due to famine.

Correct Answer: B

The text defines overshoot as the event that "occurs when a population exceeds its carrying capacity (K)." Dieback, resource depletion, and conflict are described as consequences of overshoot, not the event of exceeding the carrying capacity itself.

Correct Answer: D

The text outlines a clear cause-and-effect chain. First, the population grows beyond its limits (Overshoot). This excessive population size leads to an environmental impact (Resource Depletion). Finally, the lack of resources causes a major effect on the population itself (Dieback).

Correct Answer: B

The provided text explicitly uses "(K)" to denote carrying capacity in the sentence: "When a population exceeds its carrying capacity (K), overshoot occurs."

Correct Answer: A

The text states that dieback occurs "because the lack of available resources leads to famine, disease, and/or conflict." Therefore, the depletion of resources is the fundamental cause that triggers the famine, increased susceptibility to disease, and heightened conflict for the remaining resources.