BIO 320 ECOLOGY EXAM 3 2026 LATEST
UPDATE QUESTIONS AND CORRECT
VERIFIED ANSWERS ALREADY GRADED
A+
Which of the following statements is true?
A) Large patches of habitat usually contain fewer species than small
patches.
B) Large animals usually have larger home ranges than smaller animals.
C) Carnivore home ranges are usually smaller than herbivore home
ranges.
D) Small species are usually limited to small habitat patches - ans-B)
Large animals usually have larger home ranges than smaller
animals
According to the theory of island biogeography, the islands with the most
species will
be
A) small and close to the mainland.
B) small and far from the mainland.
C) large and close to the mainland.
D) large and far from the mainland. - ans-C) large and close to the
mainland.
A set of local communities that are linked by the dispersal of multiple,
potentially
interacting species is referred to as a(n)
A) ecotone.
B) archipelago.
,C) metapopulation.
D) metacommunity. - ans-D) metacommunity.
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. - ans-D) frequency, intensity, and
scale.
(t/f) Habitat fragmentation is harmful because no species are adapted to
living along
habitat edges - ans-false
(t/f) For a given body size, the home range of carnivores is greater than
that of herbivores. - ans-true
(t/f) The theory of island biogeography was developed for islands and
cannot be applied
to habitat patches within a larger landscape. - ans-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. - ans-D) chronosequences
Succession in a community involves
A) only autotrophic species.
B) only heterotrophic species.
, C) both autotrophic and heterotrophic species.
D) only detritivorous species. - ans-C) both autotrophic and heterotrophic
species.
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 -
ans-A) seasonal changes in temperature, photoperiod, and light intensity
As glaciers in North America melted, formerly glaciated areas were
invaded by
A) ice.
B) tundralike vegetation.
C) boreal forest, dominated by spruce and jack pine.
D) various species of trees, including spruce, white pine, oaks, and
maples. - ans-D) various species of trees, including spruce, white pine,
oaks, and maples.
(t/f) Grasses are usually the first plant species to colonize sand dunes. -
ans-true
(t/f) The monoclimax hypothesis views succession as the gradual and
progressive
development of the community to the ultimate stage. - ans-true
(t/f) In the early stages of plant succession, shade-intolerant species are
often common. - ans-true
UPDATE QUESTIONS AND CORRECT
VERIFIED ANSWERS ALREADY GRADED
A+
Which of the following statements is true?
A) Large patches of habitat usually contain fewer species than small
patches.
B) Large animals usually have larger home ranges than smaller animals.
C) Carnivore home ranges are usually smaller than herbivore home
ranges.
D) Small species are usually limited to small habitat patches - ans-B)
Large animals usually have larger home ranges than smaller
animals
According to the theory of island biogeography, the islands with the most
species will
be
A) small and close to the mainland.
B) small and far from the mainland.
C) large and close to the mainland.
D) large and far from the mainland. - ans-C) large and close to the
mainland.
A set of local communities that are linked by the dispersal of multiple,
potentially
interacting species is referred to as a(n)
A) ecotone.
B) archipelago.
,C) metapopulation.
D) metacommunity. - ans-D) metacommunity.
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. - ans-D) frequency, intensity, and
scale.
(t/f) Habitat fragmentation is harmful because no species are adapted to
living along
habitat edges - ans-false
(t/f) For a given body size, the home range of carnivores is greater than
that of herbivores. - ans-true
(t/f) The theory of island biogeography was developed for islands and
cannot be applied
to habitat patches within a larger landscape. - ans-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. - ans-D) chronosequences
Succession in a community involves
A) only autotrophic species.
B) only heterotrophic species.
, C) both autotrophic and heterotrophic species.
D) only detritivorous species. - ans-C) both autotrophic and heterotrophic
species.
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 -
ans-A) seasonal changes in temperature, photoperiod, and light intensity
As glaciers in North America melted, formerly glaciated areas were
invaded by
A) ice.
B) tundralike vegetation.
C) boreal forest, dominated by spruce and jack pine.
D) various species of trees, including spruce, white pine, oaks, and
maples. - ans-D) various species of trees, including spruce, white pine,
oaks, and maples.
(t/f) Grasses are usually the first plant species to colonize sand dunes. -
ans-true
(t/f) The monoclimax hypothesis views succession as the gradual and
progressive
development of the community to the ultimate stage. - ans-true
(t/f) In the early stages of plant succession, shade-intolerant species are
often common. - ans-true
