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Pre-Test
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1
Most natural populations exhibit exponential growth.
A)True
B)False
2
Survivorship curves illustrate the impact of ___________ among different age groups in a population.
A)sex ratio
B)age distribution
C)fecundity
D)mortality
3
The sum total of all the ways an organism utilizes the resources of its environment is called a
A)niche.
B)community.
C)survivorship curve.
D)cohort.
4
_____________ is a symbiotic relationship that may be regarded as a special form of predator/prey relationship.
A)Mutualism
B)Parasitism
C)Commensalism
D)All of the above
5
When a predator population decreases in number, the prey population
A)also decreases.
B)increases.
C)stays the same.
D)varies, depending on the species involved.





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