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WorksheetsPopulation Unit Review
Total questions: 28
Worksheet time: 15mins
What is a possible part of a trophic cascade?
Poorer water quality
Lack of vegetation
Overabundance of prey animals
Alteration of the food web
What population dispersion pattern do schools of fish have?
Random
Uniform
Clumped
Which population dispersion is common among territorial species?
Random
Uniform
Clumped
What is the technical name for a J-graph?
Logistic Growth Graph
Exponential Growth Graph
What population dispersion pattern is most common among dandelions?
Random
Uniform
Clumped
Which growth graph is more common and sustainable?
Logistical Growth Graph
Exponential Growth Graph
What is the resulting effect once a keystone species is removed from an ecosystem?
Trophic Cascade
Genetic Drift
Bottleneck Effect
Emigration
What are the 3 population dispersion patterns?
Random, Uniform, Squished
Clumped, Random, Columns
Scattered, Random, Uniform
Random, Uniform, Clumped
What is the technical name of an S-graph?
Logistical Growth Graph
Exponential Growth Graph
Are natural disasters examples of density dependent or independent factors?
Density Dependent
Density Independent
If a species was mostly wiped out by a volcano and only a few members remained, what would that be called?
Natural Selection
Genetic Bottleneck
Founders Effect
Is disease spread a density dependent or independent factor
Density Dependent
Density Independent
A toad with a mutation of more bumps is able to camouflage itself and avoid predators better than its counterparts. What is this an example of?
Natural Selection
Genetic Bottleneck
Founders Effect
A population of seals is released into an entirely new area and a population grows from that small sample. What is this an example of?
Natural Selection
Genetic Bottleneck
Founders Effect
The definition of keystone species is...
A species that is crucial to the flow of an ecosystem
The species at the top of the food chain
The series of events that occurs after a certain species is removed
A species that produces its own food
Natural selection is...
A random event that decreases the amount of diversity within a species
A small portion of a species being introduced to a new area
Certain members of a species surviving better because of a mutation or adaptation
"Survival of the Fittest"
A birth rate is...
The rate at which individuals are moving into an area
The rate at which new individuals are being born into an ecosystem
The rate at which individuals are leaving an area
The rate at which individuals are dying within an ecosystem
Death rate is...
The rate at which individuals are dying in an ecosystem
The rate at which individuals are being born into an ecosystem
The rate at which individuals are coming into an ecosystem
The rate at which individuals are leaving an ecosystem
What is the difference between emigration and immigration?
Emigration is coming into an environment. Immigration is leaving an environment.
Emigration is leaving an environment. Immigration is coming into an environment.
There is no difference.
Population dispersion is...
How old a species is on average
# of individuals per unit area
How closely packed a species is
Where on Earth a species lives
What is one of the criteria for a species to be invasive?
Non-native
Causes harm
Looks pretty
Usually out-competes native species
If there are 200 beetles in 2 acres what is the population density?
100 beetles/acre
50 beetles/acre
20 beetles/acre
150 beetles/acre
What is the effect after a keystone species removed from an ecosystem called?
Founders effect
Bottleneck effect
Logistic growth
Trophic cascade
Genetic drift is...
When a small portion of a species is introduced to a new area
Random events that decrease the diversity of a species
A catastrophic event that causes a reduction in a species
Certain members of a species surviving better because of mutations or adaptations
What is it called when a small group of a species is introduced to a new area?
Genetic Bottleneck
Natural Selection
Genetic Drift
Founders Effect
What is a catastrophic event that reduces the size and diversity of a population called?
Genetic Drift
Genetic Bottleneck
Natural Selection
Founders Effect
Population density is...
The average age of a species
Where on Earth a species lives
How closely packed the species is
# of individuals of a species per unit area
What is the equation used to calculate population density?
Unit Area/Number of Species
Number of Species/Unit Area
Number of Individuals/Unit Area
Unit Area/Number of Individuals
