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BIO 320 EXAM 3 NEWEST 2025/2026 ACTUAL EXAM
COMPLETE QUESTIONS AND 100%CORRECT
ANSWERS WITH RATIONALES(VERIFIED AND
GRADED A+)
The impact of a disturbance is determined by its
A) frequency, period, and scale.
B) period, scale, and type.
C) frequency, intensity, and strength.
D) frequency, intensity, and scale - ANSWER-D
Habitat fragmentation is harmful because no species are
adapted to living along
habitat edges. - ANSWER-FALSE
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For a given body size, the home range of carnivores is
greater than that of herbivores - ANSWER-TRUE
The theory of island biogeography was developed for
islands and cannot be applied
to habitat patches within a larger landscape. - ANSWER-
FALSE
Groups of sites within an area that are at different stages
of succession are known as
A) autosequences.
B) ecotypes.
C) clines.
D) chronosequences. - ANSWER-D
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The number of species within a community is usually
greatest when
A) no disturbance occurs.
B) a low frequency of disturbance occurs.
C) an intermediate frequency of disturbance occurs.
D) a high rate of disturbance occurs - ANSWER-C
Succession in a community involves
A) only autotrophic species.
B) only heterotrophic species.
C) both autotrophic and heterotrophic species.
D) only detritivorous species. - ANSWER-C
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Which of the following is an example of an allogenic
change that drives succession?
A) seasonal changes in temperature, photoperiod, and
light intensity
B) increased shading of seedlings by adult trees in a forest
C) increased nitrogen availability in soil due to the
presence of leguminous plants
D) reduced salinity due to surface shading by grasses in a
salt marsh - ANSWER-A
As glaciers in North America melted, formerly glaciated
areas were invaded by
A) ice.
BIO 320 EXAM 3 NEWEST 2025/2026 ACTUAL EXAM
COMPLETE QUESTIONS AND 100%CORRECT
ANSWERS WITH RATIONALES(VERIFIED AND
GRADED A+)
The impact of a disturbance is determined by its
A) frequency, period, and scale.
B) period, scale, and type.
C) frequency, intensity, and strength.
D) frequency, intensity, and scale - ANSWER-D
Habitat fragmentation is harmful because no species are
adapted to living along
habitat edges. - ANSWER-FALSE
,2|Page
For a given body size, the home range of carnivores is
greater than that of herbivores - ANSWER-TRUE
The theory of island biogeography was developed for
islands and cannot be applied
to habitat patches within a larger landscape. - ANSWER-
FALSE
Groups of sites within an area that are at different stages
of succession are known as
A) autosequences.
B) ecotypes.
C) clines.
D) chronosequences. - ANSWER-D
,3|Page
The number of species within a community is usually
greatest when
A) no disturbance occurs.
B) a low frequency of disturbance occurs.
C) an intermediate frequency of disturbance occurs.
D) a high rate of disturbance occurs - ANSWER-C
Succession in a community involves
A) only autotrophic species.
B) only heterotrophic species.
C) both autotrophic and heterotrophic species.
D) only detritivorous species. - ANSWER-C
, 4|Page
Which of the following is an example of an allogenic
change that drives succession?
A) seasonal changes in temperature, photoperiod, and
light intensity
B) increased shading of seedlings by adult trees in a forest
C) increased nitrogen availability in soil due to the
presence of leguminous plants
D) reduced salinity due to surface shading by grasses in a
salt marsh - ANSWER-A
As glaciers in North America melted, formerly glaciated
areas were invaded by
A) ice.
