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