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BIO 152 MODULE 3 EXAM PORTAGE LEARNING LATEST 2021
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BIO 152 MODULE 3 EXAM PORTAGE LEARNING LATEST 2021
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BIO 152 MODULE 3 EXAM PORTAGE LEARNINGLATEST 2024/2025 ALL QUESTIONS WITH 100%
CORRECT ANSWERS/ BIO 152 ANATOMY AND
PHYSIOLOGY MODULE 3 LATEST EXAM
A population is correctly defined as having which of the following characteristics?
A. live and reproduce in the same general area
B. belonging to the same species
C. possessing a constant and uniform density and dispersion - ANSWER A&B
An ecologist recorded 12 white-tailed deer, Odocoileus virginianus, per square mile
in one woodlot and 20 per square mile in another woodlot. What was the ecologist
comparing?
A. density
B. dispersion
C. carrying capacity
D. cohorts
E. range - ANSWER A
Which of the following choices would most likely promote random distribution?
A. territorial species
B. species that secrete chemicals to attract or inhibit other individuals
C. flocking and schooling behaviors
D. spacing during the breeding season
E. homogeneous chemical and physical factors in the environment - ANSWER E
Consider two forests: one is an undisturbed old-growth forest, while the other has
recently been logged. In which forest are species likely to experience exponential
growth, and why?
A. Old growth, because of stable conditions that would favor exponential growth of
all species in the forest.
B. Old growth, because each of the species is well established and can produce
many offspring.
C. Logged, because the disturbed forest affords more resources for increased
specific populations to grow.
D. Logged, because the various populations are stimulated to a higher reproductive
potential.
E. Exponential growth is equally probable in old-growth and logged forests. -
ANSWER C
Which of the following causes populations to shift most quickly from an exponential
to a logistic population growth?
A. increased birth rate
B. removal of predators
C. decreased death rate
D. competition for resources
, E. favorable climatic conditions - ANSWER D
Which of the following is characteristic of K-strategists?
A. Have offspring with good chances of survival
B. Have many offspring per reproductive episode
C. Have small offspring
D. Have a high intrinsic growth rate
E. Early parental reproduction - ANSWER A
Which of the following is most likely to contribute to density-dependent regulation of
populations?
A. the removal of toxic waste by decomposers
B. intra-specific competition for nutrients
C. floods
D. fires - ANSWER B
Why do populations grow more slowly as they approach their carrying capacity?
A. Density-dependent factors lead to fewer births and increased mortality.
B. Density-independent factors lead to fewer births and increased mortality.
C. Hormonal changes promote higher death rates in crowded populations.
D. Individuals voluntarily stop mating so that overcrowding does not occur.
E. The incoming energy decreases in populations experiencing a high rate of
increase - ANSWER A
As N approaches K for a certain population, which of the following is predicted by the
logistic equation? Select one:
A. The growth rate will not change.
B. The growth rate will approach zero.
C. The growth rate will increase
D. The population will increase exponentially.
E. The carrying capacity of the environment will increase - ANSWER B
A population of ground squirrels has an annual per capita birth rate of 0.06 and an
annual per capita death rate of 0.02. Calculate an estimate of the number of
individuals added to a population of 1,000 individuals in one year (so that is the
growth of the population.
Select one:
A. 120
B. 40
C. 20
D. 400 - ANSWER B
Which of the following statements is consistent with the principle of competitive
exclusion?
Select one:
A. Bird species generally do not compete for nesting sites.
B. The random distribution of one competing species will have a positive impact on
the population growth of the other competing species.
C. Two species with the same fundamental niche will exclude other competing
species.
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