Question 1

According to the intermediate disturbance hypothesis, species richness is greatest in communities that experience ____.

Accepted Answer

A)   rare moderate disturbances
B)   high temperatures
C)   frequent severe disturbances
D)   frequent moderate disturbances
E)   rare intense disturbancesF) C) and E)
G) B) and E)

Question 2

What is the difference between a food chain and a food web?

Accepted Answer

A food chain is depicted in a straight l...

Question 3

Which best describes a dominant species?

Accepted Answer

A)   A dominant species is the only species in an area.
B)   A dominant species has low genetic diversity.
C)   A dominant species has high species richness.
D)   A dominant species has a high relative abundance.
E)   A dominant species has a low relative abundance.F) B) and E)
G) C) and E)

Question 4

What benefit do legumes derive from Rhizobium ?

Accepted Answer

A)   help make carbon dioxide more available
B)   increase root surface area
C)   nitrogen fixation
D)   protection from predators
E)   retain water so it is more available to the plantF) A) and B)
G) C) and E)

Question 5

What is the relationship between species richness and recovery from natural disturbances?

Accepted Answer

A)   Communities with more diversity do not recover from natural disturbances.
B)   Communities with more diversity experience more natural disturbances.
C)   Communities with more diversity recover less rapidly from natural disturbances.
D)   Communities with more diversity recover more rapidly from natural disturbances.
E)   There is no correlation between community diversity and recovery from natural disturbances.F) B) and C)
G) B) and D)

Question 6

More _____ need to be studied in order to find out whether interspecific competition strongly influences the species composition and structure of most communities.

Accepted Answer

A)   communities
B)   K -selected species
C)   r -selected species
D)   predators
E)   prey speciesF) B) and D)
G) D) and E)

Question 7

Which interaction is advantageous for one species, but has no effect on the other?

Accepted Answer

A)   commensalism
B)   herbivory
C)   mutualism
D)   parasitism
E)   predationF) A) and B)
G) C) and D)

Question 8

In many ecological communities, one common species can function as a foundation species , defining the nature of a community by creating locally stable environmental conditions.

Accepted Answer

A) True 
 B)False

Question 9

How do North American porcupines protect themselves from predators?

Accepted Answer

A)   Their coloration serves as a disguise.
B)   They seek shelter in a tree.
C)   They have large jaws with teeth.
D)   They release a noxious spray.
E)   They release sharp modified hairs that stick in a predator's mouth.F) C) and D)
G) All of the above

Exam 53: Population Interactions and Community Ecology

How do North American porcupines protect themselves from predators?

Correct Answer
verified

What benefit do legumes derive from Rhizobium ?

Correct Answer
verified

More _____ need to be studied in order to find out whether interspecific competition strongly influences the species composition and structure of most communities.

Correct Answer
verified

According to the intermediate disturbance hypothesis, species richness is greatest in communities that experience ____.

Correct Answer
verified

In many ecological communities, one common species can function as a foundation species , defining the nature of a community by creating locally stable environmental conditions.

Correct Answer
verified

What is the difference between a food chain and a food web?

Correct Answer
verified
A food chain is depicted in a straight l...
View Answer

Which best describes a dominant species?

Correct Answer
verified

What is the relationship between species richness and recovery from natural disturbances?

Correct Answer
verified

Which interaction is advantageous for one species, but has no effect on the other?

Correct Answer
verified

Exam 53: Population Interactions and Community Ecology

How do North American porcupines protect themselves from predators?

Correct AnswerverifiedShow Answer

What benefit do legumes derive from Rhizobium ?

Correct AnswerverifiedShow Answer

More _____ need to be studied in order to find out whether interspecific competition strongly influences the species composition and structure of most communities.

Correct AnswerverifiedShow Answer

According to the intermediate disturbance hypothesis, species richness is greatest in communities that experience ____.

Correct AnswerverifiedShow Answer

In many ecological communities, one common species can function as a foundation species , defining the nature of a community by creating locally stable environmental conditions.

Correct AnswerverifiedShow Answer

What is the difference between a food chain and a food web?

Correct AnswerverifiedA food chain is depicted in a straight l...View AnswerShow Answer

Which best describes a dominant species?

Correct AnswerverifiedShow Answer

What is the relationship between species richness and recovery from natural disturbances?

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Which interaction is advantageous for one species, but has no effect on the other?

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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A food chain is depicted in a straight l...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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