PCB 3043 Chapter 11 || A+ Guaranteed.
Why is the realized niche of a species considered to be a subset of its fundamental niche?
-The fundamental niche is the area of a species' livable range of abiotic conditions, but the
realized niche is the area other organisms do not prevent the species from occupying.
-The fundamental niche depends on biotic factors that influence a species' ability to thrive,
whereas the realized niche depends on both biotic and abiotic factors.
-The fundamental niche is the geographic area covered by a species' population, but the realized
niche is only the area with a positive population growth rate.
-The fundamental niche is the actual geographical area where a species persists, whereas the
realized niche is the potential area where a species can persist. correct answers -The fundamental
niche is the area of a species' livable range of abiotic conditions, but the realized niche is the area
other organisms do not prevent the species from occupying.
How could scientists use ecological niche modeling to fight the spread of the introduced emerald
ash borer in North America?
-Identify places to monitor in North America that have habitat characteristics similar to the
emerald ash borer's native range.
-Expose emerald ash borers to North American beetle pathogens to find out if the borers are
susceptible to the pathogens.
-Introduce small populations of emerald ash borers into various forest habitats and monitor the
growth of each population.
-Alter the forest composition in areas with emerald ash borers by selectively cutting infected ash
trees and using them as firewood there. correct answers -Identify places to monitor in North
America that have habitat characteristics similar to the emerald ash borer's native range.
The American bullfrog is native to much of the eastern and central United States. Over the past
200 years, humans have repeatedly introduced bullfrogs into other areas.
What conclusions can be drawn from the map of the American bullfrog's current range in the
United States?
-Conditions across the entire United States are suitable as the bullfrog's habitat.
-The bullfrog lacks dispersal corridors with suitable habitat between east and west coast
populations.
-The bullfrog's realized niche includes its native range and much of the habitat along the west
coast.
-The habitats in the bullfrog's native range are of higher quality than habitats in the introduced
range. correct answers -The bullfrog lacks dispersal corridors with suitable habitat between east
and west coast populations.
-The bullfrog's realized niche includes its native range and much of the habitat along the west
coast.
In terms of metapopulation modeling, what is a dispersal barrier?
, -Unsuitable habitat surrounding suitable habitat.
-A lack of dispersers of reproductive age.
-Unoccupied patches of suitable habitat.
-Suitable habitat patches that are occupied. correct answers -Unsuitable habitat surrounding
suitable habitat.
Amphibians are animals that begin their lives in water or in a protective, wet, jelly-like coating.
Most amphibians also live part of their juvenile or adult lives on land. Although they have lungs,
amphibians supplement their breathing through their skin. Their skin must stay minimally moist
for the gas exchange to take place.
What are potential dispersal barriers for North American amphibians that migrate northward due
to climate change?
-Mesic forest.
-Clearcut forest.
-Highways.
-Paved parking lots. correct answers -Clearcut forest.
-Highways.
-Paved parking lots.
Classify the descriptions of organisms as examples of clustered, evenly spaced, or random
dispersion patterns:
Wolves forming. a pack within a large territory. correct answers Clustered dispersion
Classify the descriptions of organisms as examples of clustered, evenly spaced, or random
dispersion patterns:
Cattails only growing in the shallow water of a lake. correct answers Clustered dispersion
Classify the descriptions of organisms as examples of clustered, evenly spaced, or random
dispersion patterns:
Penguins leaving a minimum distance between nests in a breeding colony. correct answers
Evenly spaced dispersion
Classify the descriptions of organisms as examples of clustered, evenly spaced, or random
dispersion patterns:
Wind-blown pine seeds sprouting wherever they fall on a burned hillside. correct answers
Random dispersion
Why is the realized niche of a species considered to be a subset of its fundamental niche?
-The fundamental niche is the area of a species' livable range of abiotic conditions, but the
realized niche is the area other organisms do not prevent the species from occupying.
-The fundamental niche depends on biotic factors that influence a species' ability to thrive,
whereas the realized niche depends on both biotic and abiotic factors.
-The fundamental niche is the geographic area covered by a species' population, but the realized
niche is only the area with a positive population growth rate.
-The fundamental niche is the actual geographical area where a species persists, whereas the
realized niche is the potential area where a species can persist. correct answers -The fundamental
niche is the area of a species' livable range of abiotic conditions, but the realized niche is the area
other organisms do not prevent the species from occupying.
How could scientists use ecological niche modeling to fight the spread of the introduced emerald
ash borer in North America?
-Identify places to monitor in North America that have habitat characteristics similar to the
emerald ash borer's native range.
-Expose emerald ash borers to North American beetle pathogens to find out if the borers are
susceptible to the pathogens.
-Introduce small populations of emerald ash borers into various forest habitats and monitor the
growth of each population.
-Alter the forest composition in areas with emerald ash borers by selectively cutting infected ash
trees and using them as firewood there. correct answers -Identify places to monitor in North
America that have habitat characteristics similar to the emerald ash borer's native range.
The American bullfrog is native to much of the eastern and central United States. Over the past
200 years, humans have repeatedly introduced bullfrogs into other areas.
What conclusions can be drawn from the map of the American bullfrog's current range in the
United States?
-Conditions across the entire United States are suitable as the bullfrog's habitat.
-The bullfrog lacks dispersal corridors with suitable habitat between east and west coast
populations.
-The bullfrog's realized niche includes its native range and much of the habitat along the west
coast.
-The habitats in the bullfrog's native range are of higher quality than habitats in the introduced
range. correct answers -The bullfrog lacks dispersal corridors with suitable habitat between east
and west coast populations.
-The bullfrog's realized niche includes its native range and much of the habitat along the west
coast.
In terms of metapopulation modeling, what is a dispersal barrier?
, -Unsuitable habitat surrounding suitable habitat.
-A lack of dispersers of reproductive age.
-Unoccupied patches of suitable habitat.
-Suitable habitat patches that are occupied. correct answers -Unsuitable habitat surrounding
suitable habitat.
Amphibians are animals that begin their lives in water or in a protective, wet, jelly-like coating.
Most amphibians also live part of their juvenile or adult lives on land. Although they have lungs,
amphibians supplement their breathing through their skin. Their skin must stay minimally moist
for the gas exchange to take place.
What are potential dispersal barriers for North American amphibians that migrate northward due
to climate change?
-Mesic forest.
-Clearcut forest.
-Highways.
-Paved parking lots. correct answers -Clearcut forest.
-Highways.
-Paved parking lots.
Classify the descriptions of organisms as examples of clustered, evenly spaced, or random
dispersion patterns:
Wolves forming. a pack within a large territory. correct answers Clustered dispersion
Classify the descriptions of organisms as examples of clustered, evenly spaced, or random
dispersion patterns:
Cattails only growing in the shallow water of a lake. correct answers Clustered dispersion
Classify the descriptions of organisms as examples of clustered, evenly spaced, or random
dispersion patterns:
Penguins leaving a minimum distance between nests in a breeding colony. correct answers
Evenly spaced dispersion
Classify the descriptions of organisms as examples of clustered, evenly spaced, or random
dispersion patterns:
Wind-blown pine seeds sprouting wherever they fall on a burned hillside. correct answers
Random dispersion
