Question 1

The term _______ describes all interacting species,such as moose,ticks,and wolves,as well as their surrounding environment of trees,vegetation,and climate.

Accepted Answer

A)   habitat
B)   community
C)   biosphere
D)   ecosystem
E)   biome

Question 2

Which is NOT a result of climate change affecting the predator/prey relationships of Isle Royale?

Accepted Answer

A)   The moose population has decreased.
B)   The wolf population has decreased.
C)   The tick population has decreased.
D)   The moose population has been weakened by ticks.
E)   The moose population has been losing hair. C

Question 3

A researcher who investigates how flooding affects the different populations on an island is most interested in which level of organization?

Accepted Answer

A)   ecosystem
B)   community
C)   biome
D)   individual
E)   biosphere

Question 4

The predator species on Isle Royale is the

Accepted Answer

A)   moose.
B)   wolf.
C)   plants.
D)   ravens.
E)   caribou.

Question 5

Which of the following represents exponential population growth?

Accepted Answer

A)   100 →\rightarrow→ 110  →\rightarrow→ 120  →\rightarrow→ 130  →\rightarrow→ 140
B)   100  →\rightarrow→ 110  →\rightarrow→ 130  →\rightarrow→ 160  →\rightarrow→ 200
C)   100  →\rightarrow→ 110  →\rightarrow→ 121  →\rightarrow→ 133  →\rightarrow→ 146
D)   100  →\rightarrow→ 150  →\rightarrow→ 200  →\rightarrow→ 250  →\rightarrow→ 300
E)   100  →\rightarrow→ 150  →\rightarrow→ 250  →\rightarrow→ 450  →\rightarrow→ 850

Question 6

Which behavior would most likely result in a uniform distribution pattern?

Accepted Answer

A)   migration
B)   defensive strategies
C)   predator avoidance
D)   territorial and nesting behaviors in birds
E)   social network of bees

Question 7

Warmer temperatures have led to an increase of which population on Isle Royale?

Accepted Answer

A)   predator
B)   prey
C)   parasites
D)   producers
E)   consumers

Question 8

Which of the following BEST describes the growth curves of predator and prey?

Accepted Answer

A)   zero growth rate for each population
B)   exponential growth for both until carrying capacity is reached
C)   interdependent cycles of boom and bust or hills and valleys
D)   logistic growth until carrying capacity is reached
E)   a leveling off of growth when the natural increase is zero C

Question 9

Growth rates are _____.

Accepted Answer

A)   the difference between birth and death rates in a population
B)   not influenced by immigration and emigration patterns
C)   positive when the birth rates are less than the death rates
D)   logistic when the populations increase at a constant rate
E)   none of these

Question 10

All of these statements can be advantages of a clumped distribution pattern EXCEPT _____.

Accepted Answer

A)   it allows individuals to maximize space between them
B)   it allows organisms to hunt prey more efficiently
C)   it helps organisms defend themselves against predators
D)   organisms can match their distribution to resource-rich areas
E)   all of these are advantages of a clumped distribution pattern.

Question 11

Which phrase is NOT a biotic factor affecting population growth of moose on Isle Royale?

Accepted Answer

A)   summer temperatures
B)   food availability
C)   wolf population size
D)   tick population growth
E)   infectious disease

Question 12

A report based on the interactions of wolves,moose,ticks,and trees on Isle Royale describes a(n) ______.

Accepted Answer

A)   population
B)   community
C)   habitat
D)   biome
E)   ecosystem

Question 13

All of the polar bears,seals,fish species,whales,seabirds,and the Aleut people in the Aleutian Islands make up a(n) ______.

Accepted Answer

A)   island ecosystem
B)   island system population
C)   island biogeographic unit
D)   population
E)   community

Question 14

A few years after a prey species population decreases,the _____.

Accepted Answer

A)   predator population will increase
B)   prey population must decrease
C)   predator population will decrease
D)   predator population will exceed carrying capacity
E)   prey population will exceed carrying capacity

Question 15

Which of the following would cause a population to grow?

Accepted Answer

A)   identical increases in both the birth rate and the death rate of a population
B)   a decrease in the birth rate and an increase in the death rate of a population
C)   an increase in the birth rate and a decrease in the death rate of a population
D)   an increase in the birth rate and a larger increase in the death rate of a population
E)   identical decreases in the birth rate and the death rate of the population

Question 16

Which ecological definition is incorrect?

Accepted Answer

A)   A population is a group of individuals of the same species living in the same region.
B)   An ecosystem consists of individuals,populations,and communities.
C)   An individual is a single organism of a particular species.
D)   A community is made up of biotic and nonliving components.
E)   none of these

Question 17

A population limited by environmental factors would be an example of

Accepted Answer

A)   logistic growth.
B)   exponential growth.
C)   logarithmic growth.
D)   arithmetic growth.
E)   linear growth.

Question 18

Which is a density-independent factor?

Accepted Answer

A)   competition
B)   drought
C)   parasitism
D)   disease
E)   predation

Question 19

A few years after a predator species population decreases,the ____.

Accepted Answer

A)   predator population will increase
B)   prey population must decrease
C)   predator population will decrease
D)   predator population will exceed carrying capacity
E)   prey population will increase E

Question 20

A plant with wind-dispersed seeds is most likely to grow in a ____ distribution.

Accepted Answer

A)   random
B)   linear
C)   spherical
D)   clumped
E)   uniform

Exam 20: Population Ecology

The term _______ describes all interacting species,such as moose,ticks,and wolves,as well as their surrounding environment of trees,vegetation,and climate.

Correct AnswerverifiedShow Answer

Which is NOT a result of climate change affecting the predator/prey relationships of Isle Royale?

Correct AnswerverifiedC

A researcher who investigates how flooding affects the different populations on an island is most interested in which level of organization?

Correct AnswerverifiedShow Answer

The predator species on Isle Royale is the

Correct AnswerverifiedShow Answer

Which of the following represents exponential population growth?

Correct AnswerverifiedShow Answer

Which behavior would most likely result in a uniform distribution pattern?

Correct AnswerverifiedShow Answer

Warmer temperatures have led to an increase of which population on Isle Royale?

Correct AnswerverifiedShow Answer

Which of the following BEST describes the growth curves of predator and prey?

Correct AnswerverifiedC

Growth rates are _____.

Correct AnswerverifiedShow Answer

All of these statements can be advantages of a clumped distribution pattern EXCEPT _____.

Correct AnswerverifiedShow Answer

Which phrase is NOT a biotic factor affecting population growth of moose on Isle Royale?

Correct AnswerverifiedShow Answer

A report based on the interactions of wolves,moose,ticks,and trees on Isle Royale describes a(n) ______.

Correct AnswerverifiedShow Answer

All of the polar bears,seals,fish species,whales,seabirds,and the Aleut people in the Aleutian Islands make up a(n) ______.

Correct AnswerverifiedShow Answer

A few years after a prey species population decreases,the _____.

Correct AnswerverifiedShow Answer

Which of the following would cause a population to grow?

Correct AnswerverifiedShow Answer

Which ecological definition is incorrect?

Correct AnswerverifiedShow Answer

A population limited by environmental factors would be an example of

Correct AnswerverifiedShow Answer

Which is a density-independent factor?

Correct AnswerverifiedShow Answer

A few years after a predator species population decreases,the ____.

Correct AnswerverifiedE

A plant with wind-dispersed seeds is most likely to grow in a ____ distribution.

Correct AnswerverifiedShow Answer

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C

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C

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E

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