Question 1

The number of new individuals produced per unit time in a population is its

Accepted Answer

A)  immigration rate.
B)  emigration rate.
C)  death rate.
D)  birth rate.
E)  expatriation ratE.F) A) and E)
G) A) and D)

Question 2

In the section "Investigating Life: Let Your Love Light Shine",what did the scientists propose to explain why females did not prefer males with longer duration flashes?

Accepted Answer

A)  The males produced spermatophores too large in size.
B)  They were similar to those from predatory fireflies.
C)  The males produced spermatophores too small in size.
D)  They may be from a different species of firefly.E) A) and B)
F) B) and C) B

Question 3

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

Accepted Answer

A) True 
 B)False  True

Question 4

Which of the following is an example of an aquatic community?

Accepted Answer

A)  fishes,snails,crabs,water,and salinity
B)  fishes,snails,and crabs only
C)  both water and salinity
D)  water only
E)  salinity onlyF) A) and C)
G) A) and E)

Question 5

In the section "Investigating Life: Let Your Love Light Shine",what correlation did the scientists observe in part a of the figure?

Accepted Answer

A)  The longer the flash duration,the larger the size of the spermatophore.
B)  The shorter the flash duration,the larger the size of the spermatophore.
C)  The longer the flash duration,the smaller the size of the spermatophore.
D)  There was no correlation between the flash duration and the size of the spermatophore.E) C) and D)
F) A) and B)

Question 6

Which of the following are abiotic components?

Accepted Answer

A)  trees,birds,insects,rainfall,and sunlight
B)  trees,birds,and insects only
C)  birds and insects only
D)  trees only
E)  rainfall and sunlight onlyF) A) and E)
G) B) and C)

Question 7

A country's ecological footprint can be calculated by multiplying its population size by the footprint of each individual.Why are some ecologists concerned about the ecological footprint of a country like India?

Accepted Answer

A)  Its population is increasing.
B)  Its standard of living is increasing.
C)  Both its population and standard of living are increasing.
D)  Its population and land area are increasing.
E)  Its standard of living and land area are increasing.F) A) and E)
G) None of the above

Question 8

Why are the leading causes of human death in high-income countries heart disease,stroke,and cancer,while in low-income countries infectious diseases are the leading causes of death?

Accepted Answer

A)  High-income countries have sedentary life habits,excess food resources,and longer life expectancies.
B)  High-income countries have larger ecological footprints.
C)  High-income countries have larger population densities only.
D)  High-income countries have larger population densities and are usually clustereD.
E)  Genetic differences between populations causes the differences.F) B) and C)
G) A) and D)

Question 9

Which of the following best describes the link between survivorship curves and equilibrium species?

Accepted Answer

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

Question 10

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

Accepted Answer

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

Question 11

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 was the growth rate of India's population?

Accepted Answer

A)  0.027
B)  0.013
C)  0.014
D)  0.040
E)  0.001F) D) and E)
G) B) and C)

Question 12

Which of the following organisms is an example of an equilibrium species?

Accepted Answer

A)  cats
B)  rats
C)  spiders
D)  whales
E)  goldfishF) A) and E)
G) None of the above

Question 13

Ecologists study

Accepted Answer

A)  prokaryotes only.
B)  eukaryotes only.
C)  interactions between all organisms.
D)  plants and animals only.
E)  animals only.F) B) and E)
G) C) and D)

Question 14

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

Accepted Answer

A) True 
 B)False

Question 15

Which of the following is an example of an aquatic ecosystem?

Accepted Answer

A)  fishes,snails,crabs,water,and salinity
B)  fishes,snails,and crabs only
C)  both water and salinity
D)  water only
E)  salinity onlyF) C) and D)
G) C) and E)

Question 16

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

Accepted Answer

A)  immigration rate.
B)  emigration rate.
C)  death rate.
D)  birth rate.
E)  expatriation ratE.F) All of the above
G) C) and D)

Question 17

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 agE.F) All of the above
G) None of the above

Question 18

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

Accepted Answer

A) True 
 B)False

Question 19

Which of the following organisms is an example of an opportunistic species?

Accepted Answer

A)  dolphins
B)  humans
C)  rabbits
D)  penguins
E)  tortoisesF) A) and E)
G) A) and C)

Question 20

Hydra,a type of cnidarian,have equal survival rates through life because they are equally fit at all stages.Hydra are an example of an organism with a type ______ survivorship curve.

Accepted Answer

A)  0
B)  I
C)  II
D)  III
E)  IVF) B) and E)
G) A) and B) C

Exam 18: Population Ecology

The number of new individuals produced per unit time in a population is its

Correct AnswerverifiedShow Answer

In the section "Investigating Life: Let Your Love Light Shine",what did the scientists propose to explain why females did not prefer males with longer duration flashes?

Correct AnswerverifiedB

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

Correct AnswerverifiedTrue

Which of the following is an example of an aquatic community?

Correct AnswerverifiedShow Answer

In the section "Investigating Life: Let Your Love Light Shine",what correlation did the scientists observe in part a of the figure?

Correct AnswerverifiedShow Answer

Which of the following are abiotic components?

Correct AnswerverifiedShow Answer

A country's ecological footprint can be calculated by multiplying its population size by the footprint of each individual.Why are some ecologists concerned about the ecological footprint of a country like India?

Correct AnswerverifiedShow Answer

Why are the leading causes of human death in high-income countries heart disease,stroke,and cancer,while in low-income countries infectious diseases are the leading causes of death?

Correct AnswerverifiedShow Answer

Which of the following best describes the link between survivorship curves and equilibrium species?

Correct AnswerverifiedShow Answer

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

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 was the growth rate of India's population?

Correct AnswerverifiedShow Answer

Which of the following organisms is an example of an equilibrium species?

Correct AnswerverifiedShow Answer

Ecologists study

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is an example of an aquatic ecosystem?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following organisms is an example of an opportunistic species?

Correct AnswerverifiedShow Answer

Hydra,a type of cnidarian,have equal survival rates through life because they are equally fit at all stages.Hydra are an example of an organism with a type ______ survivorship curve.

Correct AnswerverifiedC

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B

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True

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C