eccb 403 exam 3 2026 Questions and
Answers
Chapter 14 - Correct answer-
Thinking about the diagram summarizing population regulation that we discussed
in class, which of the following was not among the factors hypothesized as
density-dependent mechanisms of intraspecific population regulation:
E. Pollution - Correct answer-a. Behavior
b. Stress
c. Genetic
d. Dispersal
e. Pollution
In an unstable environment, one would expect that _____ limit population growth.
a. Density-independent factors - Correct answer-a. Density-independent factors
b. Density-dependent factors
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, c. Both density-independent and density-dependent factors
In a stable environment, one would expect that _____ limit population growth.
b. Density-dependent factors - Correct answer-a. Density-independent factors
b. Density-dependent factors
c. Both density-independent and density-dependent factors
Which of the following factors represent the state of a population as stability
decreases due to increasing stochastic variation?
e. a and c above - Correct answer-a. Biotic decoupling
b. Over-connectedness
c. Abiotic limitation
d. Limit cycles and chaos
e. a and c above
True or false: Within the context of population regulation and limitation, a factor is
defined as a limiting factor if a change in the factor produces a change in the
average, or equilibrium, density of a population. - Correct answer-
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Answers
Chapter 14 - Correct answer-
Thinking about the diagram summarizing population regulation that we discussed
in class, which of the following was not among the factors hypothesized as
density-dependent mechanisms of intraspecific population regulation:
E. Pollution - Correct answer-a. Behavior
b. Stress
c. Genetic
d. Dispersal
e. Pollution
In an unstable environment, one would expect that _____ limit population growth.
a. Density-independent factors - Correct answer-a. Density-independent factors
b. Density-dependent factors
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, c. Both density-independent and density-dependent factors
In a stable environment, one would expect that _____ limit population growth.
b. Density-dependent factors - Correct answer-a. Density-independent factors
b. Density-dependent factors
c. Both density-independent and density-dependent factors
Which of the following factors represent the state of a population as stability
decreases due to increasing stochastic variation?
e. a and c above - Correct answer-a. Biotic decoupling
b. Over-connectedness
c. Abiotic limitation
d. Limit cycles and chaos
e. a and c above
True or false: Within the context of population regulation and limitation, a factor is
defined as a limiting factor if a change in the factor produces a change in the
average, or equilibrium, density of a population. - Correct answer-
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