Question 1

Which of the following is TRUE regarding competition?

Accepted Answer

A) One species will always drive the other to extinction. 
B) Competition is always focused on food. 
C) The species larger in size typically outcompetes the smaller. 
D) Water temperature can influence the outcome of competitive interactions. 
A) One species will always drive the other to extinction. 
B) Competition is always focused on food. 
C) The species larger in size typically outcompetes the smaller. 
D) Water temperature can influence the outcome of competitive interactions.

Question 2

________ competition results when nonterritorial behavioral interactions between two species result in negative effects on both species.

Accepted Answer

The answer of ________ competition results when nonterritorial behavioral interactions...

Question 3

Coexisting species of wild cats differ in the size of their canine teeth,which corresponds to differences in their preferred species of prey.This outcome is most likely the result of

Accepted Answer

A) resource partitioning. 
B) ecological release. 
C) competitive exclusion. 
D) preemptive competition. 
A) resource partitioning. 
B) ecological release. 
C) competitive exclusion. 
D) preemptive competition.

Question 4

Removing individuals during a competition experiment may have direct and indirect effects on the environment that are not intended or understood by the investigators and that can influence the response of the remaining species.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following is a nonresource (or nonconsumable resource)that can influence the outcome of competition among plant species?

Accepted Answer

A) temperature 
B) light 
C) water 
D) nitrogen 
A) temperature 
B) light 
C) water 
D) nitrogen

Question 6

Interspecific competition involves individuals of two or more species vying for the same limited ________.

Accepted Answer

The answer of Interspecific competition involves individuals of two or...

Question 7

The coexistence of competitors due to differences in the range of resources used or environmental tolerances is referred to as niche ________.

Accepted Answer

The answer of The coexistence of competitors due to differences...

Question 8

Laboratory studies have confirmed that two different species can coexist while using the same resource.

Accepted Answer

A) True 
 B)False

Question 9

Climatic variation can function as a density-independent limitation on population density.

Accepted Answer

A) True 
 B)False

Question 10

The Lotka-Volterra equations predict the outcomes of ________ competition under different conditions.

Accepted Answer

The answer of The Lotka-Volterra equations predict the outcomes of...

Question 11

According to the Lotka-Volterra equations,which of the following is not an expected outcome of competitive interactions between two species?

Accepted Answer

A) Species 1 drives species 2 to extinction. 
B) Species 2 drives species 1 to extinction. 
C) Both species coexist. 
D) The populations of both species increase to infinity. 
A) Species 1 drives species 2 to extinction. 
B) Species 2 drives species 1 to extinction. 
C) Both species coexist. 
D) The populations of both species increase to infinity.

Question 12

If the carrying capacity of species 2 was actually 50,what would the competitive outcome be?

Accepted Answer

A) Both species coexist. 
B) Species 1 wins. 
C) Species 2 wins. 
D) Both species go extinct. 
A) Both species coexist. 
B) Species 1 wins. 
C) Species 2 wins. 
D) Both species go extinct.

Question 13

The Russian biologist G.F.Gause was one of the first to support the Lotka-Volterra equations by studying the competitive interactions of ________ species.

Accepted Answer

The answer of The Russian biologist G.F.Gause was one of...

Question 14

Competitive release is most likely to occur when a

Accepted Answer

A) species colonizes an island that already has potential competitors. 
B) species moves into new habitats that it never occupied on a mainland. 
C) species decreases in abundance. 
D) competing species is added to a community. 
A) species colonizes an island that already has potential competitors. 
B) species moves into new habitats that it never occupied on a mainland. 
C) species decreases in abundance. 
D) competing species is added to a community.

Question 15

In Tilman's experiments with diatoms,what was the outcome when the two species competed for silica?

Accepted Answer

A) Both coexisted. 
B) Both survived several years but one eventually won out. 
C) One outcompeted the other to extinction. 
D) Both died. 
A) Both coexisted. 
B) Both survived several years but one eventually won out. 
C) One outcompeted the other to extinction. 
D) Both died.

Question 16

A relationship that affects the populations of two or more species adversely is referred to as ________ competition.

Accepted Answer

The answer of A relationship that affects the populations of...

Question 17

Differences among species may relate to adaptation for the ability to exploit a certain environment or range of resources independent of competition.

Accepted Answer

A) True 
 B)False

Question 18

According to the competitive exclusion principle,the populations of two species that live in the same place and have exactly the same ecological requirements

Accepted Answer

A) can coexist at the same carrying capacity (K)as when each population is separate. 
B) can coexist but with the population of each species at half of the carrying capacity (K)as when each population is separate. 
C) can coexist but with the population of one species much higher than that of the other species. 
D) cannot coexist because one species will eventually drive the other to extinction. 
A) can coexist at the same carrying capacity (K)as when each population is separate. 
B) can coexist but with the population of each species at half of the carrying capacity (K)as when each population is separate. 
C) can coexist but with the population of one species much higher than that of the other species. 
D) cannot coexist because one species will eventually drive the other to extinction.

Question 19

What is the outcome of these isoclines?

Accepted Answer

A) Species 1 wins. 
B) If species 1 begins with a higher abundance,it wins. 
C) Species 2 wins. 
D) Both species coexist. 
A) Species 1 wins. 
B) If species 1 begins with a higher abundance,it wins. 
C) Species 2 wins. 
D) Both species coexist.

Question 20

According to the figure,when these two species are combined in a culture,what will the outcome be?

Accepted Answer

A) P)aurelia wins. 
B) P)caudatum wins. 
C) Both species coexist. 
D) P)aurelia wins only if it starts at a higher abundance. 
A) P)aurelia wins. 
B) P)caudatum wins. 
C) Both species coexist. 
D) P)aurelia wins only if it starts at a higher abundance.

Exam 13: Interspecific Competition

Which of the following is TRUE regarding competition?

________ competition results when nonterritorial behavioral interactions between two species result in negative effects on both species.

Coexisting species of wild cats differ in the size of their canine teeth,which corresponds to differences in their preferred species of prey.This outcome is most likely the result of

Removing individuals during a competition experiment may have direct and indirect effects on the environment that are not intended or understood by the investigators and that can influence the response of the remaining species.

Which of the following is a nonresource (or nonconsumable resource)that can influence the outcome of competition among plant species?

Interspecific competition involves individuals of two or more species vying for the same limited ________.

The coexistence of competitors due to differences in the range of resources used or environmental tolerances is referred to as niche ________.

Laboratory studies have confirmed that two different species can coexist while using the same resource.

Climatic variation can function as a density-independent limitation on population density.

The Lotka-Volterra equations predict the outcomes of ________ competition under different conditions.

According to the Lotka-Volterra equations,which of the following is not an expected outcome of competitive interactions between two species?

If the carrying capacity of species 2 was actually 50,what would the competitive outcome be?

The Russian biologist G.F.Gause was one of the first to support the Lotka-Volterra equations by studying the competitive interactions of ________ species.

Competitive release is most likely to occur when a

In Tilman's experiments with diatoms,what was the outcome when the two species competed for silica?

A relationship that affects the populations of two or more species adversely is referred to as ________ competition.

Differences among species may relate to adaptation for the ability to exploit a certain environment or range of resources independent of competition.

According to the competitive exclusion principle,the populations of two species that live in the same place and have exactly the same ecological requirements

What is the outcome of these isoclines?

According to the figure,when these two species are combined in a culture,what will the outcome be?

The Nature of Ecology

Climate

The Aquatic Environment

The Terrestrial Environment

Adaptation and Natural Selection

Plant Adaptations to the Environment

Animal Adaptations to the Environment

Properties of Populations

Population Growth

Life History

Intraspecific Population Regulation

Species Interactions, population Dynamics, and Natural Selection

Predation

Parasitism and Mutualism

Community Structure

Factors Influencing the Structure of Communities

Community Dynamics

Landscape Dynamics

Ecosystem Energetics

Decomposition and Nutrient Cycling

Biogeochemical Cycles

Terrestrial Ecosystems

Aquatic Ecosystems

Coastal and Wetland Ecosystems

Large-Scale Patterns of Biological Diversity

The Ecology of Climate Change

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