Question 1

Factors such as the age of reproductive maturity,maximum litter size,and the gestation period combine to produce an upper limit for the growth rate of any population;under what circumstances is that rate most likely to be seen?

Accepted Answer

A)   when the population approaches a density that's 50 percent of its carrying capacity
B)   when there are very few individuals in the population,for example,the initial colonists in a new habitat or the first few individuals of an introduced species
C)   when the population reaches its carrying capacity
D)   when the survivors following a population crash begin to reproduce

Question 2

In computing an individual's ecological footprint,which of the following would NOT be included?

Accepted Answer

A)   energy demand
B)   food use
C)   goods and services use
D)   education level

Question 3

Which of the following has the highest population density?

Accepted Answer

A)   1 grasshopper living in an area of 10 square meters
B)   100 rabbits living in an area of 10,000 square meters
C)   200 sparrows living in an area of 20,000 square meters
D)   1,500 oysters living in an area of 1,500 square meters

Question 4

The rates of population growth and emigration are directly proportional.

Accepted Answer

A) True 
 B)False

Question 5

When an isolated population reaches its carrying capacity

Accepted Answer

A)   the birth rate > the death rate.
B)   the birth rate = the death rate.
C)   the birth rate 
D)   It is not possible to generalize these values.

Question 6

Which density-dependent process contributed most significantly to the recovery of the North American monarch butterfly population after the severe winter losses of 2002?

Accepted Answer

A)   Unusually mild weather in the eastern United States greatly improved juvenile butterfly survival.
B)   Butterfly predators starved when the monarch population dropped,and by the time it had recovered,Monarch population numbers were back up.
C)   Egg production is inversely proportional to density;the surviving monarchs had ample resources and experienced maximal reproduction.
D)   With fewer returning adults,there was less competition for food among the young caterpillars,and their survival rate was unusually high.

Question 7

A relationship between birth rate and population density exists,for example,in the plantain weed Plantago major;as densities increase,birth rates ________.

Accepted Answer

The answer of A relationship between birth rate and population...

Question 8

The population explosion that occurred shortly after the Opuntia cactus was introduced to Australia is an example of

Accepted Answer

A)   exponential growth.
B)   emigration.
C)   reduced population density.
D)   a native species outcompeting an introduced species.

Question 9

Food shortages and communicable disease are examples of factors that can increase a population's death rate while simultaneously ________ its growth rate.

Accepted Answer

The answer of Food shortages and communicable disease are examples...

Question 10

One of the greatest concerns to ecologists today is the possibility that the current rate of human population growth will soon produce a human population that exceeds the ________ of our environment.

Accepted Answer

The answer of One of the greatest concerns to ecologists...

Exam 21: Growth of Populations

A relationship between birth rate and population density exists,for example,in the plantain weed Plantago major;as densities increase,birth rates ________.

Correct Answer
verified

Which density-dependent process contributed most significantly to the recovery of the North American monarch butterfly population after the severe winter losses of 2002?

Correct Answer
verified

Which of the following has the highest population density?

Correct Answer
verified

In computing an individual's ecological footprint,which of the following would NOT be included?

Correct Answer
verified

The rates of population growth and emigration are directly proportional.

Correct Answer
verified

Food shortages and communicable disease are examples of factors that can increase a population's death rate while simultaneously ________ its growth rate.

Correct Answer
verified

Factors such as the age of reproductive maturity,maximum litter size,and the gestation period combine to produce an upper limit for the growth rate of any population;under what circumstances is that rate most likely to be seen?

Correct Answer
verified

When an isolated population reaches its carrying capacity

Correct Answer
verified

One of the greatest concerns to ecologists today is the possibility that the current rate of human population growth will soon produce a human population that exceeds the ________ of our environment.

Correct Answer
verified

The population explosion that occurred shortly after the Opuntia cactus was introduced to Australia is an example of

Correct Answer
verified

Exam 21: Growth of Populations

A relationship between birth rate and population density exists,for example,in the plantain weed Plantago major;as densities increase,birth rates ________.

Correct AnswerverifiedShow Answer

Which density-dependent process contributed most significantly to the recovery of the North American monarch butterfly population after the severe winter losses of 2002?

Correct AnswerverifiedShow Answer

Which of the following has the highest population density?

Correct AnswerverifiedShow Answer

In computing an individual's ecological footprint,which of the following would NOT be included?

Correct AnswerverifiedShow Answer

The rates of population growth and emigration are directly proportional.

Correct AnswerverifiedShow Answer

Food shortages and communicable disease are examples of factors that can increase a population's death rate while simultaneously ________ its growth rate.

Correct AnswerverifiedShow Answer

Factors such as the age of reproductive maturity,maximum litter size,and the gestation period combine to produce an upper limit for the growth rate of any population;under what circumstances is that rate most likely to be seen?

Correct AnswerverifiedShow Answer

When an isolated population reaches its carrying capacity

Correct AnswerverifiedShow Answer

One of the greatest concerns to ecologists today is the possibility that the current rate of human population growth will soon produce a human population that exceeds the ________ of our environment.

Correct AnswerverifiedShow Answer

The population explosion that occurred shortly after the Opuntia cactus was introduced to Australia is an example of

Correct AnswerverifiedShow Answer

Correct Answer
verified

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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Correct Answer
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Correct Answer
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Correct Answer
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