Question 1

Governments of France,Canada,and China offer financial incentives to encourage citizens to have children.

Accepted Answer

A) True 
 B)False

Question 2

Researchers studying guppies in Trinidad found that guppies in streams with high predation reproduced earlier and more frequently.Which of the following is most important in driving the guppies to change their life history in face of predation?

Accepted Answer

A)  K-selection
B)  r-selection
C)  Density-independent factors
D)  Density-dependent factors
E)  Sexual selectionF) All of the above
G) B) and C)

Question 3

Predation of deer by wolves is an example of a:

Accepted Answer

A)  Density-independent limit
B)  Density-codependent limit
C)  Density-dependent limit
D)  Death-dependent factor
E)  Death-independent factorF) A) and B)
G) A) and C)

Question 4

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

Accepted Answer

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

Question 5

In a survivorship curve,a type I species,like a human or elephant,is a species that:

Accepted Answer

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

Question 6

When exponential growth is plotted over time an S-shaped curve emerges.

Accepted Answer

A) True 
 B)False

Question 7

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 ratesE) A) and D)
F) A) and C)

Question 8

How did the scientists obtain the different frequencies of flashes seen in figure 36.20b?

Accepted Answer

A)  By training male fireflies to flash for a given duration
B)  By electrically stimulating male fireflies to flash for a given duration
C)  They made an artificial male firefly
D)  By playing videotapes of fireflies flashing for a given durationE) C) and D)
F) B) and C)

Question 9

The type of population distribution seen when the habitat is relatively consistent and individuals do not strongly attract or repel one another is:

Accepted Answer

A)  Clumped distribution
B)  Uniform distribution
C)  Non-selected distribution
D)  Forced distribution
E)  Random distributionF) A) and D)
G) C) and D)

Question 10

The maximum number of individuals of a population that a habitat can support indefinitely is its carrying capacity.

Accepted Answer

A) True 
 B)False

Question 11

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

Accepted Answer

A)  The population growth rate stabilizes
B)  The population growth rate is high
C)  The population growth rate is low
D)  The population crashes
E)  None of the above are correctF) C) and E)
G) A) and B)

Question 12

The type of population distribution seen when only portions of a habitat are the most favorable is:

Accepted Answer

A)  Clumped distribution
B)  Random distribution
C)  Uniform distribution
D)  Non-selected distribution
E)  Forced distributionF) A) and B)
G) B) and E)

Question 13

-Based upon the population pyramid above you would expect the Indian population to:

Accepted Answer

A)  Shrink
B)  Stay constant
C)  Grow and then stabilize
D)  Grow exponentiallyE) A) and C)
F) None of the above

Question 14

In 2010 India had a population of 1,170,000,000,a birth rate of 0.027,and a death rate of 0.013.What is the growth rate of India's population?

Accepted Answer

A)  0.027
B)  0.013
C)  0.014
D)  0.040
E)  0.001F) All of the above
G) B) and D)

Question 15

Fireflies are _____.

Accepted Answer

A)  Heterotrophic invertebrates
B)  Heterotrophic vertebrates
C)  Autotrophic invertebrates
D)  Autotrophic vertebratesE) A) and D)
F) All of the above

Question 16

A method that could reduce the birth rate of the brown tree snake population on Guam is:

Accepted Answer

A)  Use pheromones to attract the snakes to the traps
B)  Use dead rats laced with acetaminophen
C)  Capture and kill the snakes
D)  Release sterilized males to compete with wild fertile males
E)  All of the aboveF) B) and E)
G) D) and E)

Question 17

What hypothesis did the scientists test?

Accepted Answer

A)  That the frequency of a male's flashes indicated how healthy he was
B)  That a male's flashes may correlate with the number of sperm he produces
C)  That females reject males who present them small spermatophores
D)  That females cannot determine the size of a male's spermatophore before mating
E)  That a male's flashes may correlate with the size of his spermatophoreF) A) and C)
G) None of the above

Question 18

Which of the following best describes the link between survivorship curves and r-selected species?

Accepted Answer

A)  r-selected species are limited by density-dependent factors and have few offspring
B)  r-selected species are limited by density-independent factors and have few offspring
C)  r-selected species are limited by density-independent factors and have many offspring
D)  r-selected species are limited by density-dependent factors and have many offspringE) None of the above
F) A) and B)

Question 19

The United Nations has estimated (for the high estimate)that the world's human population may reach about 11 billion by the year 2050 and still be growing.

Accepted Answer

A) True 
 B)False

Question 20

What hypothesis did the scientists propose for females not preferring longer duration flashes?

Accepted Answer

A)  The males would produce too large a spermatophore
B)  They were similar to those from predatory fireflies
C)  The males would produce too small a spermatophore
D)  They may be from a different species of fireflyE) B) and D)
F) None of the above

Exam 36: Populations

Fireflies are _____.

Correct AnswerverifiedShow Answer

The type of population distribution seen when only portions of a habitat are the most favorable is:

Correct AnswerverifiedShow Answer

The type of population distribution seen when the habitat is relatively consistent and individuals do not strongly attract or repel one another is:

Correct AnswerverifiedShow Answer

Governments of France,Canada,and China offer financial incentives to encourage citizens to have children.

Correct AnswerverifiedShow Answer

What hypothesis did the scientists propose for females not preferring longer duration flashes?

Correct AnswerverifiedShow Answer

In a survivorship curve,a type I species,like a human or elephant,is a species that:

Correct AnswerverifiedShow Answer

A method that could reduce the birth rate of the brown tree snake population on Guam is:

Correct AnswerverifiedShow Answer

How did the scientists obtain the different frequencies of flashes seen in figure 36.20b?

Correct AnswerverifiedShow Answer

What hypothesis did the scientists test?

Correct AnswerverifiedShow Answer

The maximum number of individuals of a population that a habitat can support indefinitely is its carrying capacity.

Correct AnswerverifiedShow Answer

When exponential growth is plotted over time an S-shaped curve emerges.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Researchers studying guppies in Trinidad found that guppies in streams with high predation reproduced earlier and more frequently.Which of the following is most important in driving the guppies to change their life history in face of predation?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following best describes the link between survivorship curves and r-selected species?

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.What is the growth rate of India's population?

Correct AnswerverifiedShow Answer

-Based upon the population pyramid above you would expect the Indian population to:

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Predation of deer by wolves is an example of a:

Correct AnswerverifiedShow Answer

The United Nations has estimated (for the high estimate)that the world's human population may reach about 11 billion by the year 2050 and still be growing.

Correct AnswerverifiedShow Answer

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