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AP Environmental Science Practice Quiz: Population Growth and Resource Availability

Written by AP Content Team, Verified for 2026 AP Exams, Last updated: May 2026

Test your understanding with short quizzes. This quiz has 11 questions to check your progress.

Question 1 of 11

According to the provided text, which of the following is a primary limiting factor for population growth?

All Questions (11)

According to the provided text, which of the following is a primary limiting factor for population growth?

A) Genetic diversity

B) Predator-prey relationships

C) The availability of resources and space

D) The rate of emigration

Correct Answer: C

The text explicitly states, 'Population growth is limited by environmental factors, especially by the available resources and space.'

Based on the provided principles, what is the most likely outcome for a population when the resources it needs for growth are abundant?

A) Population growth will stabilize at zero.

B) Population growth will decline below carrying capacity.

C) Population growth will usually accelerate.

D) The population will experience an immediate increase in mortality.

Correct Answer: C

The content states, 'When the resources needed by a population for growth are abundant, population growth usually accelerates.'

A deer population on an isolated island has consumed most of the available vegetation. According to the text, which of the following are the most likely direct consequences of this shrinking resource base?

A) Increased fecundity and decreased mortality

B) Accelerated population growth

C) Increased mortality and/or decreased fecundity

D) The resource base becoming infinite

Correct Answer: C

The text explains that when a population's resource base shrinks, it will 'result in increased mortality, decreased fecundity, or both.'

Which statement best describes the fundamental nature of the total resource base as presented in the text?

A) It is infinite and can be expanded by population demand.

B) It is limited and finite across all time scales.

C) It is only a limiting factor for small populations.

D) It becomes more abundant as population size increases.

Correct Answer: B

The text makes a definitive statement on this topic: 'Resource availability and the total resource base are limited and finite over all scales of time.'

When a population's resource base shrinks, the text suggests that population growth will decline to, or fall below, a certain threshold. What is this threshold known as?

A) The resource limit

B) The mortality point

C) The fecundity rate

D) The carrying capacity

Correct Answer: D

The text directly links the decline in population growth due to resource shrinkage to a specific concept: '...resulting in population growth declining to, or below, carrying capacity.'

As resources become scarce for a growing population, what does the text indicate is a likely outcome regarding how those remaining resources are shared among individuals?

A) The resources will be distributed more equally.

B) The population will evolve to require fewer resources.

C) The potential for unequal distribution of resources will increase.

D) The total resource base will expand to meet the demand.

Correct Answer: C

The text states, 'When the resource base of a population shrinks, the increased potential for unequal distribution of resources will ultimately result in increased mortality...'

A small population of algae is placed in a pond rich with nutrients. Initially, the population grows rapidly. After several weeks, the population size plummets. Which concept from the text best explains the eventual plummet in population size?

A) The initial abundance of resources led to a permanent increase in carrying capacity.

B) The population's finite resource base was depleted, leading to increased mortality.

C) The population growth accelerated indefinitely due to abundant resources.

D) The algae adapted to have a higher fecundity, stabilizing the population.

Correct Answer: B

The initial rapid growth is explained by abundant resources. The subsequent plummet is explained by the fact that the resource base is 'limited and finite,' and its shrinking leads to 'increased mortality...resulting in population growth declining to, or below, carrying capacity.'

According to the text, a shrinking resource base can lead to all of the following outcomes EXCEPT:

A) Increased mortality

B) Decreased fecundity

C) Accelerated population growth

D) Population growth declining to carrying capacity

Correct Answer: C

The text associates a shrinking resource base with increased mortality, decreased fecundity, and declining population growth. In contrast, it links 'accelerated population growth' with abundant resources.

Which core principle from the text provides the ultimate reason why no population can experience accelerated growth indefinitely?

A) Population growth is affected by fecundity.

B) Unequal distribution of resources can occur.

C) The total resource base is limited and finite.

D) Populations are limited by space.

Correct Answer: C

While fecundity and space are factors, the most fundamental reason that prevents indefinite growth is that the resources required for that growth are not infinite. The text states, 'Resource availability and the total resource base are limited and finite over all scales of time.'

A scientist observes a bacterial culture in a petri dish containing a fixed amount of nutrient agar. Which sequence of events described in the text best models the entire life cycle of this culture?

A) A shrinking resource base leads to abundant resources, causing the population to decline.

B) Finite resources cause an immediate increase in mortality, followed by a period of accelerated growth.

C) Abundant resources cause accelerated growth, which depletes the finite resource base, leading to increased mortality and population decline.

D) Unequal resource distribution leads to a decrease in fecundity, which then causes the resource base to become abundant.

Correct Answer: C

This option correctly synthesizes the entire process described in the text. The initial state of 'abundant resources' leads to 'accelerated growth.' This growth consumes the 'limited and finite' resource base, causing it to shrink. A shrinking resource base then results in 'increased mortality' and a population decline toward or below carrying capacity.

What is the direct relationship between resource availability and population growth as described in the provided content?

A) As resources decrease, population growth accelerates.

B) Resource availability has no effect on population growth.

C) As resources become more abundant, population growth typically accelerates.

D) Population growth is only limited by space, not resources.

Correct Answer: C

The text establishes a clear, direct relationship: 'When the resources needed by a population for growth are abundant, population growth usually accelerates.' Conversely, it states that a shrinking resource base leads to a decline in population growth.