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Test Description: Ch. 21 Populations and Communities
Instructions: Answer all questions to get your test result.
1) parts of the Earth and the atmosphere where there is life
A
population
B
commensalism
C
biosphere
D
parasitism
2) potential growth of a population in perfect conditions with no limiting factors
A
habitat
B
migration
C
biotic potential
D
birthrate
3) largest number of individuals of one species that an environment can support
A
mutualism
B
commensalism
C
carrying capacity
D
population density
4) struggle in a community for the same resources
A
consumer
B
endangered species
C
competition
D
extinct species
5) anything that restricts the size of a population
A
niche
B
death rate
C
predator
D
limiting factor
6) all the organisms of the same species that live in the same area at the same time
A
symbiosis
B
population
C
population density
D
habitat
7) size of a population compared to the amount of space available
A
carrying capacity
B
exponential
C
threatened species
D
population density
8) number of offspring produced over a given time period
A
estimate
B
birthrate
C
biotic potential
D
commensalism
9) number of individuals that die over a given time period
A
parasitism
B
endangered species
C
death rate
D
threatened species
10) population that is at risk of extinction
A
mutualism
B
biosphere
C
limiting factor
D
endangered species
11) to determine roughly the size, nature, or extent of something
A
niche
B
estimate
C
exponential
D
limiting factor
12) mathematical expression that contains a constant raised to a power
A
exponential
B
symbiosis
C
parasitism
D
carrying capacity
13) population that has died out
A
death rate
B
threatened species
C
extinct species
D
limiting factor
14) instinctive seasonal movement of population
A
migration
B
mutualism
C
commensalism
D
population density
15) population at risk but is not yet endangered
A
threatened species
B
symbiosis
C
habitat
D
limiting factor
16) symbiotic relationship that benefits one species but does not harm or benefit another
A
commensalism
B
mutualism
C
competition
D
niche
17) organism that gets energy by eating other organisms
A
parasitism
B
extinct species
C
consumer
D
predator
18) place within an ecosystem where an organism lives
A
niche
B
habitat
C
population
D
biosphere
19) symbiotic relationship in which both partners benefit
A
exponential
B
mutualism
C
symbiosis
D
endangered species
20) what a species does in its habitat to survive
A
migration
B
niche
C
competition
D
biotic potential
*select an answer for all questions
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