Question 1

Which of the following would allow optimal population growth?

Accepted Answer

A)  accumulation of waste products
B)  predation
C)  competition
D)  limited access to food and water
E)  unlimited resourcesF) C) and D)
G) B) and C)

Question 2

Which would be the climax community in a biome that receives a large amount of rainfall?

Accepted Answer

A)  plants with high tolerance to full sun,limited water,limited nutrients
B)  the pioneer community
C)  small native plants of the area such as grasses and herbs
D)  large plants such as shrubs and trees
E)  lichens,mosses,and fernsF) C) and D)
G) A) and E)

Question 3

Several species of grain beetles can live on dry meal,obtaining water mostly as metabolic water.Many of these beetle species are grain pests that do considerable damage to stored grain.You set up a dozen jars of dry meal and introduce 50 individuals of each species to each jar,being careful to have half of each species from each sex.The food supply is sufficient to last for a year and the size is adequate so that wastes do not become toxic.Most likely,examination of the jars in six months will find

Accepted Answer

A)  a totally random variation in numbers of both beetles.
B)  only one species per jar,similar to the classic competitive exclusion principle experiment with paramecia.
C)  the same ratio of beetles as when you started,about half from each species.
D)  only dead beetles in all jars due to intense competition for the niche.
E)  half the jars with more of one species and the other half of the jars will have more of a second species of beetle.F) B) and D)
G) B) and E)

Question 4

Explain the species interactions in each of the following symbiotic relationships: parasitism,commensalism,and mutualism.

Accepted Answer

Parasitism: one species benefi...

Question 5

Explain the correct sequence of events in secondary succession of a forest.

Accepted Answer

During secondary succession there is alr...

Question 6

A population age structure diagram in which the birthrate is high and the population is mainly young would be best represented by a graph with a(n)

Accepted Answer

A)  bell shape.
B)  urn shape.
C)  pyramid shape.
D)  S-shaped curve.
E)  J-shaped curve.F) B) and E)
G) A) and B)

Question 7

You are on vacation in the Canadian Rocky Mountains and you observe that a massive forest fire has burned all the trees off the side of the mountain and sterilized the soil,leaving no topsoil.The type of succession that occurs following this type of fire is

Accepted Answer

A)  secondary succession.
B)  tertiary succession.
C)  primary succession.
D)  primary soil leaching.
E)  facilitated succession.F) None of the above
G) B) and E)

Question 8

Which of the following is a true statement?

Accepted Answer

A)  The growth rate can be positive and a population can still be the same size year after year.
B)  The growth rate has to be zero before a population can be the same size year after year.
C)  Replacement reproduction automatically gives a growth rate of zero.
D)  A growth rate of zero means the population is dying.
E)  The growth rate can be negative and a population can still be the same size year after year.F) B) and D)
G) C) and D)

Question 9

The maximum per capita rate of increase for a population that can occur under ideal conditions is the

Accepted Answer

A)  population growth.
B)  biotic potential.
C)  environmental resistance.
D)  carrying capacity.
E)  doubling time.F) A) and E)
G) C) and D)

Question 10

A number of populations of different species interacting with one another in a natural environment,such as a rotten log,is called

Accepted Answer

A)  competition.
B)  a community.
C)  a biome.
D)  predation.
E)  symbiosis.F) All of the above
G) B) and E)

Question 11

Which is NOT a parasitic relationship?

Accepted Answer

A)  The Dutch elm disease fungus infects and kills elm trees.
B)  The yellow fever virus causes fever and sometimes kills humans.
C)  A female tick fastens to the skin of a human host and draws blood for nutrition to make her eggs.
D)  The trichina worm burrows into muscle tissue,forms a cyst,and waits to continue its cycle until a predator consumes the host.
E)  Unsightly dandelions sprout in a yard and compete with the fescue grass for sunlight.F) A) and C)
G) D) and E)

Question 12

In a population of 10,000 organisms over a one-year period there are 750 births and 130 deaths.Calculate the growth rate for that year.

Accepted Answer

A)  0.062
B)  0.055
C)  0.088
D)  0.013
E)  0.075F) B) and C)
G) A) and E)

Question 13

Which of the following human populations would be expected to have the greatest increase in growth rate?

Accepted Answer

A)  A population with the majority of their population over 50 years of age.
B)  A population with its population distributed equally across all age ranges.
C)  A population with most of its population under the age of 18 years of age.
D)  A population with most of the population in middle age.
E)  A population with most of its population over the age of 18 years of age.F) C) and D)
G) B) and D)

Question 14

The role a species plays in the community is called its

Accepted Answer

A)  habitat.
B)  ecological niche.
C)  biotic role.
D)  abiotic role.
E)  ecology.F) A) and B)
G) C) and D)

Question 15

The demographic transition,where population growth slows in developed countries,may be attributed at least in part to

Accepted Answer

A)  socialization.
B)  sensitivity.
C)  an increase in family size.
D)  the rise of medicine.
E)  education.F) A) and B)
G) All of the above

Question 16

In an Asian rice paddy,carp eat decaying material from around the base of rice plants while a snail scrapes algae from the leaves,stems,and roots of the same plant.They can survive at the same time in the same rice paddy because they

Accepted Answer

A)  occupy the same habitat but use the resources differently.
B)  occupy the same habitat and use the same resources.
C)  use the same resources but occupy different habitats.
D)  occupy different habitats and use the resources differently.
E)  work according to the competitive exclusion principle.F) A) and D)
G) All of the above

Question 17

The maximum population that the environment can support for an indefinite period of time is called the

Accepted Answer

A)  biotic potential.
B)  environmental resistance.
C)  carrying capacity.
D)  replacement reproduction.
E)  demographic transition.F) B) and E)
G) B) and C)

Question 18

Which statement about parasitism is true?

Accepted Answer

A)  The host is generally smaller than the parasite.
B)  Parasites are always severe and kill the host.
C)  All parasites require a single host for their life cycle.
D)  There are examples of parasites in every kingdom of life.
E)  All parasites will remain attached to their host for the entire life span of the host.F) A) and B)
G) A) and E)

Question 19

Replacement reproduction occurs when

Accepted Answer

A)  the number of births equals the number of deaths.
B)  each couple has an average of two children,which also results in zero population growth.
C)  each couple has an average of two children,but population growth may still occur.
D)  the population reaches carrying capacity.
E)  all of the adult population is married.F) B) and D)
G) A) and B)

Question 20

List the features used to identify a species as an opportunistic species (r-strategist).

Accepted Answer

small individuals short life s...

Exam 34: Population Ecology

Which is NOT a parasitic relationship?

Correct Answer
verified

The role a species plays in the community is called its

Correct Answer
verified

Which would be the climax community in a biome that receives a large amount of rainfall?

Correct Answer
verified

Which of the following human populations would be expected to have the greatest increase in growth rate?

Correct Answer
verified

Which of the following is a true statement?

Correct Answer
verified

The maximum per capita rate of increase for a population that can occur under ideal conditions is the

Correct Answer
verified

Replacement reproduction occurs when

Correct Answer
verified

The demographic transition,where population growth slows in developed countries,may be attributed at least in part to

Correct Answer
verified

List the features used to identify a species as an opportunistic species (r-strategist).

Correct Answer
verified
small individuals short life s...
View Answer

Explain the correct sequence of events in secondary succession of a forest.

Correct Answer
verified
During secondary succession there is alr...
View Answer

A population age structure diagram in which the birthrate is high and the population is mainly young would be best represented by a graph with a(n)

Correct Answer
verified

In an Asian rice paddy,carp eat decaying material from around the base of rice plants while a snail scrapes algae from the leaves,stems,and roots of the same plant.They can survive at the same time in the same rice paddy because they

Correct Answer
verified

Correct Answer
verified

You are on vacation in the Canadian Rocky Mountains and you observe that a massive forest fire has burned all the trees off the side of the mountain and sterilized the soil,leaving no topsoil.The type of succession that occurs following this type of fire is

Correct Answer
verified

A number of populations of different species interacting with one another in a natural environment,such as a rotten log,is called

Correct Answer
verified

Explain the species interactions in each of the following symbiotic relationships: parasitism,commensalism,and mutualism.

Correct Answer
verified
Parasitism: one species benefi...
View Answer

In a population of 10,000 organisms over a one-year period there are 750 births and 130 deaths.Calculate the growth rate for that year.

Correct Answer
verified

The maximum population that the environment can support for an indefinite period of time is called the

Correct Answer
verified

Which statement about parasitism is true?

Correct Answer
verified

Which of the following would allow optimal population growth?

Correct Answer
verified

Exam 34: Population Ecology

Which is NOT a parasitic relationship?

Correct AnswerverifiedShow Answer

The role a species plays in the community is called its

Correct AnswerverifiedShow Answer

Which would be the climax community in a biome that receives a large amount of rainfall?

Correct AnswerverifiedShow Answer

Which of the following human populations would be expected to have the greatest increase in growth rate?

Correct AnswerverifiedShow Answer

Which of the following is a true statement?

Correct AnswerverifiedShow Answer

The maximum per capita rate of increase for a population that can occur under ideal conditions is the

Correct AnswerverifiedShow Answer

Replacement reproduction occurs when

Correct AnswerverifiedShow Answer

The demographic transition,where population growth slows in developed countries,may be attributed at least in part to

Correct AnswerverifiedShow Answer

List the features used to identify a species as an opportunistic species (r-strategist).

Correct Answerverifiedsmall individuals short life s...View AnswerShow Answer

Explain the correct sequence of events in secondary succession of a forest.

Correct AnswerverifiedDuring secondary succession there is alr...View AnswerShow Answer

A population age structure diagram in which the birthrate is high and the population is mainly young would be best represented by a graph with a(n)

Correct AnswerverifiedShow Answer

In an Asian rice paddy,carp eat decaying material from around the base of rice plants while a snail scrapes algae from the leaves,stems,and roots of the same plant.They can survive at the same time in the same rice paddy because they

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

You are on vacation in the Canadian Rocky Mountains and you observe that a massive forest fire has burned all the trees off the side of the mountain and sterilized the soil,leaving no topsoil.The type of succession that occurs following this type of fire is

Correct AnswerverifiedShow Answer

A number of populations of different species interacting with one another in a natural environment,such as a rotten log,is called

Correct AnswerverifiedShow Answer

Explain the species interactions in each of the following symbiotic relationships: parasitism,commensalism,and mutualism.

Correct AnswerverifiedParasitism: one species benefi...View AnswerShow Answer

In a population of 10,000 organisms over a one-year period there are 750 births and 130 deaths.Calculate the growth rate for that year.

Correct AnswerverifiedShow Answer

The maximum population that the environment can support for an indefinite period of time is called the

Correct AnswerverifiedShow Answer

Which statement about parasitism is true?

Correct AnswerverifiedShow Answer

Which of the following would allow optimal population growth?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
small individuals short life s...
View Answer

Correct Answer
verified
During secondary succession there is alr...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Parasitism: one species benefi...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified