Question 1

The harmless orange-and-black viceroy butterfly closely resembling the toxic orange-and-black monarch butterfly is an example of

Accepted Answer

A)   Müllerian mimicry.
B)   Batesian mimicry.
C)   both Müllerian and Batesian mimicry.
D)   a case of resource partitioning.
E)   a case of competitive exclusion.F) C) and E)
G) None of the above

Question 2

Organisms that are parasites

Accepted Answer

A)   are classified as either viruses, bacteria, or protists.
B)   are classified as viruses, bacteria, protists, or animals. There are no plant parasites.
C)   are found only on host animals.
D)   are only found on one type host for their entire life span.
E)   are found in all kingdoms, and will sometimes use more than one host during its lifetime.F) A) and E)
G) B) and E)

Question 3

Consider the life of the praying mantis. The large predatory female lays several hundred eggs in a foam mass in the fall. The young are most vulnerable when they emerge in the spring, but the few that survive spread out over the countryside and, if they find a mate, lay eggs the following fall. Which type of survivorship curve does this represent?

Accepted Answer

A)   type I
B)   type II
C)   type III
D)   type I or II
E)   There is not enough information given to determine the type of survivorship curve.F) A) and E)
G) A) and D) C

Question 4

An example of two similar species occupying slightly different niches in the same community would be

Accepted Answer

A)   the presence of carp in polluted waters in the United States.
B)   the fluctuation of the snowshoe hare and lynx populations in Canada.
C)   the competition between two species of barnacles in Scotland, resulting in one living in the high areas of the intertidal zone and the other species living in the low areas of the intertidal zone.
D)   removal of a starfish species from intertidal communities in Washington.
E)   killing dingoes in Australia or coyotes in the American West.F) C) and E)
G) D) and E)

Question 5

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) C) and E)
G) A) and D)

Question 6

Secondary succession occurs where is there is bare rock.

Accepted Answer

A) True 
 B)False

Question 7

When growth proceeds at a rate similar to 2 → 4 → 8 → 16 → 32 → 64...etc., it is called

Accepted Answer

A)   arithmetic growth.
B)   logistic growth.
C)   exponential growth.
D)   zero population growth.
E)   carrying capacity.F) None of the above
G) A) and B)

Question 8

A form of symbiosis in which both participants benefit is

Accepted Answer

A)   commensalism.
B)   parasitism.
C)   mutualism.
D)   predation.
E)   competition.F) B) and C)
G) D) and E) C

Question 9

A population of 100 butterflies living on an acre of land loses three-quarters of its members when a sudden freeze in the spring occurs just after they emerge as caterpillars. This population has undergone a reduction in population size due to

Accepted Answer

A)   an intrinsic factor.
B)   a density-independent factor.
C)   a density-dependent factor.
D)   natural selection.
E)   an opportunistic control.F) B) and C)
G) A) and D) B

Question 10

The idea that plants are unable to grow in a particular area until the soil has been enriched by an earlier community is the

Accepted Answer

A)   climax-pattern model.
B)   facilitation model.
C)   inhibition model.
D)   tolerance model.
E)   soil development model.F) None of the above
G) A) and D)

Question 11

When growth stops, a population has reached

Accepted Answer

A)   a lag phase.
B)   its maximum biotic potential.
C)   minimum biotic potential.
D)   carrying capacity.
E)   the end of its evolution.F) A) and B)
G) C) and D)

Question 12

One model of succession predicts that different types of plants can all colonize an area at the same time and it is chance alone that determines which one arrives first and begins the process of succession. This model is called

Accepted Answer

A)   the facilitation model.
B)   the tolerance model.
C)   the inhibition model.
D)   an opportunistic model.
E)   the climax model.F) D) and E)
G) C) and E)

Question 13

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

Accepted Answer

Parasitism: one species benefi...

Question 14

Which of the following statements accurately describes the less developed countries?

Accepted Answer

A)   high birthrate, large pre-reproductive portion of the population
B)   high birthrate, different age groups of equal size
C)   low birthrate, the largest portion of the population is elderly
D)   low birthrate, different age groups of equal size
E)   high growth rate, different age groups of equal sizeF) B) and D)
G) D) and E)

Question 15

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.
D)   A population with most of the population in middle age.
E)   A population with most of its population over the age of 30 years.F) A) and D)
G) C) and E)

Question 16

In a pine forest, very few other species of plants can grow underneath the pine trees because pine needles make the soil very acidic. This is an example of

Accepted Answer

A)   the facilitation model.
B)   the tolerance model.
C)   the inhibition model.
D)   an opportunistic model.
E)   the climax model.F) B) and D)
G) A) and B)

Question 17

Black-and-yellow stripes are a common warning coloration. Among a set of insects that possess black-and-yellow patterns are: -female wasps that sting
-male wasps that do not sting
-a tasty, harmless, and nutritious leaf beetle
-an acrid blister beetle that makes you sick if you eat it
-a harmless hover fly that sounds and looks like a bee
This assortment represents

Accepted Answer

A)   all organisms that share black and yellow because it evolved in a common ancestor.
B)   all cases of Batesian mimicry.
C)   all cases of Müllerian mimicry.
D)   a combination of cases including both Müllerian and Batesian mimicry.
E)   warning coloration only in the cases of the female wasp and blister beetle; the other cases are not mimicry.F) A) and B)
G) C) and D)

Question 18

The carrying capacity of the environment for a species is determined by

Accepted Answer

A)   the reproductive rate of the organism.
B)   the number of organisms of that species.
C)   the state and national wildlife laws pertaining to that species.
D)   a complex "balance of nature" that still has not been explained in terms that scientists can calculate.
E)   the limited productivity of the environment and the environmental resistance to the biotic potential of the organism.F) C) and D)
G) C) and E)

Question 19

All of the organisms living in your front yard represent a(n)

Accepted Answer

A)   population.
B)   ecosystem.
C)   species.
D)   community.
E)   trophic level.F) A) and B)
G) All of the above

Question 20

There are two organisms with overlapping ranges that fill a similar niche. Where their niches overlap, there is strong competition for resources. This will eventually lead to

Accepted Answer

A)   speciation.
B)   emigration.
C)   competitive exclusion.
D)   total extinction of one species.
E)   cooperative sharing of the resources.F) A) and C)
G) C) and D)

Exam 34: Population and Community Ecology

The harmless orange-and-black viceroy butterfly closely resembling the toxic orange-and-black monarch butterfly is an example of

Correct Answer
verified

Organisms that are parasites

Correct Answer
verified

Correct Answer
verified
C

An example of two similar species occupying slightly different niches in the same community would be

Correct Answer
verified

Replacement reproduction occurs when

Correct Answer
verified

Secondary succession occurs where is there is bare rock.

Correct Answer
verified

When growth proceeds at a rate similar to 2 → 4 → 8 → 16 → 32 → 64...etc., it is called

Correct Answer
verified

A form of symbiosis in which both participants benefit is

Correct Answer
verified
C

A population of 100 butterflies living on an acre of land loses three-quarters of its members when a sudden freeze in the spring occurs just after they emerge as caterpillars. This population has undergone a reduction in population size due to

Correct Answer
verified
B

The idea that plants are unable to grow in a particular area until the soil has been enriched by an earlier community is the

Correct Answer
verified

When growth stops, a population has reached

Correct Answer
verified

One model of succession predicts that different types of plants can all colonize an area at the same time and it is chance alone that determines which one arrives first and begins the process of succession. This model 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

Which of the following statements accurately describes the less developed countries?

Correct Answer
verified

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

Correct Answer
verified

In a pine forest, very few other species of plants can grow underneath the pine trees because pine needles make the soil very acidic. This is an example of

Correct Answer
verified

Correct Answer
verified

The carrying capacity of the environment for a species is determined by

Correct Answer
verified

All of the organisms living in your front yard represent a(n)

Correct Answer
verified

There are two organisms with overlapping ranges that fill a similar niche. Where their niches overlap, there is strong competition for resources. This will eventually lead to

Correct Answer
verified

Exam 34: Population and Community Ecology

The harmless orange-and-black viceroy butterfly closely resembling the toxic orange-and-black monarch butterfly is an example of

Correct AnswerverifiedShow Answer

Organisms that are parasites

Correct AnswerverifiedShow Answer

Correct AnswerverifiedC

An example of two similar species occupying slightly different niches in the same community would be

Correct AnswerverifiedShow Answer

Replacement reproduction occurs when

Correct AnswerverifiedShow Answer

Secondary succession occurs where is there is bare rock.

Correct AnswerverifiedShow Answer

When growth proceeds at a rate similar to 2 → 4 → 8 → 16 → 32 → 64...etc., it is called

Correct AnswerverifiedShow Answer

A form of symbiosis in which both participants benefit is

Correct AnswerverifiedC

A population of 100 butterflies living on an acre of land loses three-quarters of its members when a sudden freeze in the spring occurs just after they emerge as caterpillars. This population has undergone a reduction in population size due to

Correct AnswerverifiedB

The idea that plants are unable to grow in a particular area until the soil has been enriched by an earlier community is the

Correct AnswerverifiedShow Answer

When growth stops, a population has reached

Correct AnswerverifiedShow Answer

One model of succession predicts that different types of plants can all colonize an area at the same time and it is chance alone that determines which one arrives first and begins the process of succession. This model 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

Which of the following statements accurately describes the less developed countries?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

In a pine forest, very few other species of plants can grow underneath the pine trees because pine needles make the soil very acidic. This is an example of

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The carrying capacity of the environment for a species is determined by

Correct AnswerverifiedShow Answer

All of the organisms living in your front yard represent a(n)

Correct AnswerverifiedShow Answer

There are two organisms with overlapping ranges that fill a similar niche. Where their niches overlap, there is strong competition for resources. This will eventually lead to

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
C

Correct Answer
verified
B

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified