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AP Biology Ecology Multiple Choice
Practice Test Questions And Answers
2026
1. Which of the following is NOT true regarding factors that affect the dispersion
of organisms in nature?
A. Most environmental resources are randomly
distributed.
B. Biological conditions tend to be non-uniform.
C. Dispersal of offspring is often limited or controlled
by environmental factors.
D. The development of societies in some populations
controls distribution.
,2|Page
E. Every species is adapted to specific environmental conditions. - correct-answer
- A. Most environmental resources are randomly distributed.
2. Which of the following provides a chicken rancher using a free-roaming
arrangement for his flock the data necessary to ensure maximum survival of his
hens?
A. distribution of chickens throughout the range
B. total number of chickens
C. chickens per square foot of the range
D. total square footage of the range
E. crude density of the chicken population - correct-answer - A.Distribution of
chickens throughout the range
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3. Which of the following is NOT true regarding population counts?
A. A full population count is usually impractical.
B. Ecologists estimate a population's total density from a sample of the
population.
C. Sampling within quadrats is particularly useful for most populations of
migrating animals.
D. A full population count is possible for large animals in small areas.
E. Capture-recapture methods are used to estimate the population's size of
species that do not "stay put. - correct-answer - C. Sampling within quadrats is
particularly useful for most populations of migrating animals.
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4. The accuracy of the capture-recapture methods depends on all of the following
EXCEPT that
A. marked individuals are recaptured at random.
B. unmarked individuals are captured at random.
C. none of the marked individuals are overlooked.
D. no marked individual dies or departs during the study.
E. no new individuals are produced during the study. - correct-answer - E. No new
individuals are produced during the study.
5. If K (carrying capacity) for a population is 1,200, and r =0.1, which of the
following populations will show the greatest increase over the course of one year
assuming exponential growth?
AP Biology Ecology Multiple Choice
Practice Test Questions And Answers
2026
1. Which of the following is NOT true regarding factors that affect the dispersion
of organisms in nature?
A. Most environmental resources are randomly
distributed.
B. Biological conditions tend to be non-uniform.
C. Dispersal of offspring is often limited or controlled
by environmental factors.
D. The development of societies in some populations
controls distribution.
,2|Page
E. Every species is adapted to specific environmental conditions. - correct-answer
- A. Most environmental resources are randomly distributed.
2. Which of the following provides a chicken rancher using a free-roaming
arrangement for his flock the data necessary to ensure maximum survival of his
hens?
A. distribution of chickens throughout the range
B. total number of chickens
C. chickens per square foot of the range
D. total square footage of the range
E. crude density of the chicken population - correct-answer - A.Distribution of
chickens throughout the range
,3|Page
3. Which of the following is NOT true regarding population counts?
A. A full population count is usually impractical.
B. Ecologists estimate a population's total density from a sample of the
population.
C. Sampling within quadrats is particularly useful for most populations of
migrating animals.
D. A full population count is possible for large animals in small areas.
E. Capture-recapture methods are used to estimate the population's size of
species that do not "stay put. - correct-answer - C. Sampling within quadrats is
particularly useful for most populations of migrating animals.
, 4|Page
4. The accuracy of the capture-recapture methods depends on all of the following
EXCEPT that
A. marked individuals are recaptured at random.
B. unmarked individuals are captured at random.
C. none of the marked individuals are overlooked.
D. no marked individual dies or departs during the study.
E. no new individuals are produced during the study. - correct-answer - E. No new
individuals are produced during the study.
5. If K (carrying capacity) for a population is 1,200, and r =0.1, which of the
following populations will show the greatest increase over the course of one year
assuming exponential growth?
