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Post-Test
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1
Which of the following affects population growth?
A)Population size
B)Population density
C)Population dispersion
D)All of the above
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 interspecific competition.
A)True
B)False
11
Two species can occupy the same 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
Brood parasitism is exhibited by insects that lay their eggs on living hosts.
A)True
B)False
16
An example of commensalism is
A)ants and acacias.
B)ants and aphids.
C)mosquitoes and humans.
D)clown fish and sea anemones.
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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