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Campbell Biology Chapter 54
According to the principle of competitive exclusion, two species cannot
continue to occupy the same _____.
environmental habitat
biome
range
✅
ecological niche
territory - -ecological niche
Of the choices below, which best describes the effect predation has on the
predator/prey organisms involved in the relationship?
benefit ... no effect
no effect ... benefit
harmed ... harmed
benefit ... benefit
benefit ... harmed - -benefit ... harmed
The term used to describe a harmless organism resembling a harmful one
is _____.
Batesian mimicry
warning coloration
cryptic coloration
aposematic coloration
Müllerian mimicry - -Batesian mimicry
Cellulose-digesting microorganisms live in the guts of termites and
ruminant mammals. The microorganisms have a home and food, and their
hosts gain more nutrition from their meals. This relationship is an example
of _____.
commensalism
parasitism
herbivory
predation
mutualism - -mutualism
An organism's "trophic level" refers to _____.
where it lives
the rate at which it uses energy
whether it is early or late in ecological succession
-its food source
its food source
the intensity of its competition with other species -
Keystone species are those species _____.
whose absence would cause major disruption in a community
with the largest number of individuals in a community
that live primarily on or under rocks and stones
pter 54 Exam
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,pter
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54 Exam
(!@&*&#$H(@#$*&@$&*Campbell
2024
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54 Exam
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✅-whose absence
that provide important foods and medicines
that have the most biomass in the community -
would cause major disruption in a community
Which of the following best illustrates ecological succession?
A mouse eats seeds, and an owl eats the mouse.
Introduced pheasants increase, and native quail populations disappear.
Overgrazing causes a nutrient loss from soil.
Decomposition in soil releases nitrogen that plants can use.
Grass grows on a sand dune, is replaced by shrubs, and then by trees. -
-Grass grows on a sand dune, is replaced by shrubs, and then by
trees.
According to MacArthur and Wilson's hypothesis of island biogeography,
species immigration and extinction rates on a particular island correlate to
_____.
the number of other islands in the archipelago
the island's size and distance from the mainland
when the island formed
how the island formed
the island's stage of ecological succession - -the island's size and
distance from the mainland
Caribbean coral reef communities have been strongly influenced by an
unknown pathogen that causes white-band disease. How can the effect of
white-band disease best be described?
commensalism
the removal of a keystone species
mutualism
Batesian mimicry
a cascade event that shifts the entire makeup of the community - -a
cascade event that shifts the entire makeup of the community
According to the competitive exclusion principle, two species cannot
continue to occupy the same
range.
niche.
habitat.
territory.
biome. - -niche
Which of the following best describes resource partitioning?
a climax community that is reached when no new niches are available
two species that can coevolve to share identical niches
competitive exclusion that results in the success of the superior species
pter 54 Exam
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@$&*Campbell
54 Exam
(!@&*&#$H(@#$*&@$&*Campbell
2024
Biology
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54 Exam
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2024
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Answers Solved 100%12:56:29
Correct!!.pdf10/6/2026,
PM(*@&&*Y!#HE*!HINIUKWI(*(##*&&#U#Y$U
12:56:29 PM(*@&&*Y!#HE*
Campbell Biology Chapter 54
According to the principle of competitive exclusion, two species cannot
continue to occupy the same _____.
environmental habitat
biome
range
✅
ecological niche
territory - -ecological niche
Of the choices below, which best describes the effect predation has on the
predator/prey organisms involved in the relationship?
benefit ... no effect
no effect ... benefit
harmed ... harmed
benefit ... benefit
benefit ... harmed - -benefit ... harmed
The term used to describe a harmless organism resembling a harmful one
is _____.
Batesian mimicry
warning coloration
cryptic coloration
aposematic coloration
Müllerian mimicry - -Batesian mimicry
Cellulose-digesting microorganisms live in the guts of termites and
ruminant mammals. The microorganisms have a home and food, and their
hosts gain more nutrition from their meals. This relationship is an example
of _____.
commensalism
parasitism
herbivory
predation
mutualism - -mutualism
An organism's "trophic level" refers to _____.
where it lives
the rate at which it uses energy
whether it is early or late in ecological succession
-its food source
its food source
the intensity of its competition with other species -
Keystone species are those species _____.
whose absence would cause major disruption in a community
with the largest number of individuals in a community
that live primarily on or under rocks and stones
pter 54 Exam
(!@&*&#$H(@#$*&@$&*Campbell
2024 - 2025 Questions and Answers
10/6/2026,
Biology
Solved
Chapter
12:56:29
100%54PM(*@&&*Y!#HE*!HINIUKWI(*(##*&&#U#Y$U*$(*(**#YREJE)@(p
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,pter
@$&*Campbell
54 Exam
(!@&*&#$H(@#$*&@$&*Campbell
2024
Biology
- 2025
Chapter
Questions
54 Exam
and Answers
2024
Biology
- 2025
Solved
Chapter
Questions
100%
54 Correct!!.pdf10/6/2026,
Exam
and Answers
2024 - 2025
Solved
Questions
100%
12:56:29
Correct!!.pdf10/6/2026,
andPM(*@&&*Y!#HE*!HINIUKWI(*(##*&&#U#Y$U*$(*(**#YREJE)@(p
Answers Solved 100%12:56:29
Correct!!.pdf10/6/2026,
PM(*@&&*Y!#HE*!HINIUKWI(*(##*&&#U#Y$U
12:56:29 PM(*@&&*Y!#HE*
✅-whose absence
that provide important foods and medicines
that have the most biomass in the community -
would cause major disruption in a community
Which of the following best illustrates ecological succession?
A mouse eats seeds, and an owl eats the mouse.
Introduced pheasants increase, and native quail populations disappear.
Overgrazing causes a nutrient loss from soil.
Decomposition in soil releases nitrogen that plants can use.
Grass grows on a sand dune, is replaced by shrubs, and then by trees. -
-Grass grows on a sand dune, is replaced by shrubs, and then by
trees.
According to MacArthur and Wilson's hypothesis of island biogeography,
species immigration and extinction rates on a particular island correlate to
_____.
the number of other islands in the archipelago
the island's size and distance from the mainland
when the island formed
how the island formed
the island's stage of ecological succession - -the island's size and
distance from the mainland
Caribbean coral reef communities have been strongly influenced by an
unknown pathogen that causes white-band disease. How can the effect of
white-band disease best be described?
commensalism
the removal of a keystone species
mutualism
Batesian mimicry
a cascade event that shifts the entire makeup of the community - -a
cascade event that shifts the entire makeup of the community
According to the competitive exclusion principle, two species cannot
continue to occupy the same
range.
niche.
habitat.
territory.
biome. - -niche
Which of the following best describes resource partitioning?
a climax community that is reached when no new niches are available
two species that can coevolve to share identical niches
competitive exclusion that results in the success of the superior species
pter 54 Exam
(!@&*&#$H(@#$*&@$&*Campbell
2024 - 2025 Questions and Answers
10/6/2026,
Biology
Solved
Chapter
12:56:29
100%54PM(*@&&*Y!#HE*!HINIUKWI(*(##*&&#U#Y$U*$(*(**#YREJE)@(p
Correct!!.pdf10/6/2026,
Exam 2024 - 2025 Questions
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