Question 1

Researchers studying guppies in Trinidad found that guppies in streams with high predation reproduced earlier and more frequently.How would the scientists describe the selective force acting on the guppy population?

Accepted Answer

A)   density-dependent factors
B)   K-selection
C)   density-independent factors
D)   r-selection
E)   sexual selectionF) C) and E)
G) B) and D)

Question 2

Predation of deer by wolves is an example of a

Accepted Answer

A)   density-dependent limit.
B)   death-independent factor.
C)   density-codependent limit.
D)   death-dependent factor.
E)   density-independent limit.F) None of the above
G) A) and B)

Question 3

The movement of individuals into another population is termed

Accepted Answer

A)   expatriation.
B)   emigration.
C)   clumping.
D)   immigration.
E)   population dispersion.F) A) and D)
G) D) and E)

Question 4

The number of individuals that die in a population per unit time is its _____ rate.

Accepted Answer

A)   birth
B)   expatriation
C)   emigration
D)   immigration
E)   deathF) A) and D)
G) C) and D) E

Question 5

Why have growth rates increased the most in developing countries in the past 50 years?

Accepted Answer

A)   Death rates have fallen slower than birth rates.
B)   Death rates have gone up faster than birth rates.
C)   Death rates have fallen faster than birth rates.
D)   Death rates have gone up slower than birth rates.E) A) and B)
F) A) and C)

Question 6

Species with an opportunistic,or r-selected,life history strategy

Accepted Answer

A)   provide extensive care for their offspring.
B)   produce many offspring.
C)   are long-lived.
D)   reproduce later in life.
E)   are limited primarily by carrying capacity.F) C) and D)
G) A) and B)

Question 7

In 2010 India had a population of 1,170,000,000,a birth rate of 0.027,and a death rate of 0.013.Approximately how much did the Indian population grow in 2010?

Accepted Answer

A)   17,000,000
B)   17,000
C)   170,000,000
D)   170,000
E)   1,700,000F) All of the above
G) A) and D)

Question 8

The government of China offers financial incentives to encourage citizens to have children.

Accepted Answer

A) True 
 B)False

Question 9

In the population growth curve equation G = rN(K - N) /K,when N is very small relative to K,the population

Accepted Answer

A)   growth rate is low.
B)   crashes.
C)   growth rate is high.
D)   growth rate stabilizes.
E)   None of the answer choices are correct.F) A) and B)
G) A) and C) C

Question 10

For a lady bug population at the beginning of summer,the food supply and habitat are almost limitless.If there are 1000 lady bugs in a one-acre field,the per capita rate of increase is 25%,and no immigration or emigration occurs,how many individuals will be added in the next generation? Discern whether G = rN(K - N) /K or G = rN applies appropriately.

Accepted Answer

A)   125
B)   0
C)   1250
D)   1000
E)   250F) B) and E)
G) A) and B)

Question 11

On the island of Guam,a single type of nonnative organism,the black-footed ferret,is responsible for the disappearance of at least 12 species of birds and small reptiles from the island.

Accepted Answer

A) True 
 B)False

Question 12

Two countries,_____ and _____,alone account for one-third of the human population.

Accepted Answer

A)   Russia; India
B)   India; Brazil
C)   China; Russia
D)   China; India
E)   Russia; BrazilF) A) and B)
G) A) and C)

Question 13

Figuer:
Three population distribution patterns are shown in this figure.

-The type of population distribution seen,in inset a,when the habitat is relatively consistent and individuals do not strongly attract or repel one another is _____ distribution.

Accepted Answer

A)   nonselected
B)   uniform
C)   forced
D)   random
E)   clumpedF) B) and C)
G) A) and D)

Question 14

A group of organisms of one species occupying a geographic location at the same time is a

Accepted Answer

A)   peer group.
B)   flock.
C)   population.
D)   community.
E)   herd.F) A) and D)
G) A) and C)

Question 15

Which of the following best describes the link between population-limiting factors and K-selected species?

Accepted Answer

A)   K-selected species are limited by density-dependent factors and have many offspring.
B)   K-selected species are limited by density-independent factors and have many offspring.
C)   K-selected species are limited by density-dependent factors and have few offspring.
D)   K-selected species are limited by density-independent factors and have few offspring.E) A) and C)
F) B) and D)

Question 16

In a survivorship curve,a type II species,like a song bird,is a species that has

Accepted Answer

A)   the highest probability of dying at a very young age.
B)   an equal probability of dying at any age.
C)   the highest probability of dying as it reaches its maximum life span.
D)   a strong possibility of becoming extinct in a relatively short period of time.
E)   an extremely short life span.F) A) and B)
G) D) and E)

Question 17

The physical location in which an organism lives is termed its

Accepted Answer

A)   habitat.
B)   home boundary.
C)   community.
D)   ecosystem.
E)   range.F) All of the above
G) A) and E)

Question 18

A J-shaped population growth curve indicates that

Accepted Answer

A)   the population size is approaching the carrying capacity for its resources.
B)   resources for the population are unlimited.
C)   the population is experiencing exponential growth.
D)   the population is experiencing logistic growth.
E)   the population has both unlimited resources and is experiencing exponential growth.F) A) and B)
G) D) and E) A

Question 19

Figuer:
Three population distribution patterns are shown in this figure.

-The type of population distribution seen,in inset c,when only portions of a habitat are the most favorable is

Accepted Answer

A)   nonselected distribution.
B)   random distribution.
C)   uniform distribution.
D)   clumped distribution.
E)   forced distribution.F) C) and D)
G) B) and D)

Question 20

Conditions whose growth-limiting effects increase as a population grows are density-independent factors.

Accepted Answer

A) True 
 B)False

Exam 37: Population Ecology

Researchers studying guppies in Trinidad found that guppies in streams with high predation reproduced earlier and more frequently.How would the scientists describe the selective force acting on the guppy population?

Correct Answer
verified

Predation of deer by wolves is an example of a

Correct Answer
verified

The movement of individuals into another population is termed

Correct Answer
verified

The number of individuals that die in a population per unit time is its _____ rate.

Correct Answer
verified
E

Why have growth rates increased the most in developing countries in the past 50 years?

Correct Answer
verified

Species with an opportunistic,or r-selected,life history strategy

Correct Answer
verified

In 2010 India had a population of 1,170,000,000,a birth rate of 0.027,and a death rate of 0.013.Approximately how much did the Indian population grow in 2010?

Correct Answer
verified

The government of China offers financial incentives to encourage citizens to have children.

Correct Answer
verified

In the population growth curve equation G = rN(K - N) /K,when N is very small relative to K,the population

Correct Answer
verified
C

Correct Answer
verified

On the island of Guam,a single type of nonnative organism,the black-footed ferret,is responsible for the disappearance of at least 12 species of birds and small reptiles from the island.

Correct Answer
verified

Two countries,_ and _,alone account for one-third of the human population.

Correct Answer
verified

Figuer: Three population distribution patterns are shown in this figure. -The type of population distribution seen,in inset a,when the habitat is relatively consistent and individuals do not strongly attract or repel one another is _____ distribution.

Correct Answer
verified

A group of organisms of one species occupying a geographic location at the same time is a

Correct Answer
verified

Which of the following best describes the link between population-limiting factors and K-selected species?

Correct Answer
verified

In a survivorship curve,a type II species,like a song bird,is a species that has

Correct Answer
verified

The physical location in which an organism lives is termed its

Correct Answer
verified

A J-shaped population growth curve indicates that

Correct Answer
verified
A

Figuer: Three population distribution patterns are shown in this figure. -The type of population distribution seen,in inset c,when only portions of a habitat are the most favorable is

Correct Answer
verified

Conditions whose growth-limiting effects increase as a population grows are density-independent factors.

Correct Answer
verified

Exam 37: Population Ecology

Researchers studying guppies in Trinidad found that guppies in streams with high predation reproduced earlier and more frequently.How would the scientists describe the selective force acting on the guppy population?

Correct AnswerverifiedShow Answer

Predation of deer by wolves is an example of a

Correct AnswerverifiedShow Answer

The movement of individuals into another population is termed

Correct AnswerverifiedShow Answer

The number of individuals that die in a population per unit time is its _____ rate.

Correct AnswerverifiedE

Why have growth rates increased the most in developing countries in the past 50 years?

Correct AnswerverifiedShow Answer

Species with an opportunistic,or r-selected,life history strategy

Correct AnswerverifiedShow Answer

In 2010 India had a population of 1,170,000,000,a birth rate of 0.027,and a death rate of 0.013.Approximately how much did the Indian population grow in 2010?

Correct AnswerverifiedShow Answer

The government of China offers financial incentives to encourage citizens to have children.

Correct AnswerverifiedShow Answer

In the population growth curve equation G = rN(K - N) /K,when N is very small relative to K,the population

Correct AnswerverifiedC

Correct AnswerverifiedShow Answer

On the island of Guam,a single type of nonnative organism,the black-footed ferret,is responsible for the disappearance of at least 12 species of birds and small reptiles from the island.

Correct AnswerverifiedShow Answer

Two countries,_____ and _____,alone account for one-third of the human population.

Correct AnswerverifiedShow Answer

Figuer: Three population distribution patterns are shown in this figure. -The type of population distribution seen,in inset a,when the habitat is relatively consistent and individuals do not strongly attract or repel one another is _____ distribution.

Correct AnswerverifiedShow Answer

A group of organisms of one species occupying a geographic location at the same time is a

Correct AnswerverifiedShow Answer

Which of the following best describes the link between population-limiting factors and K-selected species?

Correct AnswerverifiedShow Answer

In a survivorship curve,a type II species,like a song bird,is a species that has

Correct AnswerverifiedShow Answer

The physical location in which an organism lives is termed its

Correct AnswerverifiedShow Answer

A J-shaped population growth curve indicates that

Correct AnswerverifiedA

Figuer: Three population distribution patterns are shown in this figure. -The type of population distribution seen,in inset c,when only portions of a habitat are the most favorable is

Correct AnswerverifiedShow Answer

Conditions whose growth-limiting effects increase as a population grows are density-independent factors.

Correct AnswerverifiedShow Answer

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E

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C

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Two countries,_ and _,alone account for one-third of the human population.

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A

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