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Chapter Exam
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1
Which of the following refers to the number of individuals that occur in an area?
A)population size
B)population density
C)population dispersion
D)population growth
2
No matter how rapidly populations grow, they eventually reach a limit and begin to stabilize. This is called the ______________.
A)population growth
B)population density
C)carrying capacity
D)biotic potential
3
Most natural populations exhibit exponential growth.
A)True
B)False
4
Which of the following are density-dependent effects?
A)floods
B)fire
C)volcanic eruptions
D)none of the above
5
K-selected adaptations are exhibited by populations that experience competition over limited resources and tend to be more reproductively efficient.
A)True
B)False
6
Survivorship curves illustrate the impact of ___________ among different age groups in a population.
A)sex ratio
B)age distribution
C)fecundity
D)mortality
7
In all populations, mortality is focused on the old.
A)True
B)False
8
A community consists of which of the following?
A)plants and animals
B)prokaryotes
C)fungi
D)protists
E)all of the above
9
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
10
Competition between individuals of the same species is called inter-specific competition.
A)True
B)False
11
Two species can occupy the same entire niche indefinitely.
A)True
B)False
12
The changes exhibited in morphology and behavior of two species that occupy the same habitat is called _________________.
A)an allopatric species
B)character displacement
C)competitive exclusion
D)resource partitioning
13
Which of the following can lead to coevolution?
A)mutualism
B)parasitism
C)commensalism
D)all of the above
14
_____________ 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
15
In commensalism, both members of the relationship benefit.
A)True
B)False
16
An example of commensalism is _______________.
A)ants and acacias
B)ants and aphids
C)mosquitoes and humans
D)sea anemones and the fish that live among them
17
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
18
Predation increases competition.
A)True
B)False
19
Batesian mimicry occurs when a group of harmless species has a similar warning pattern.
A)True
B)False
20
A cleared wooded area left alone starts to slowly grow plants and reclaims the area. This is known as primary succession.
A)True
B)False





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