Question 1

Which of the following factor(s) limit(s) exponential growth of a population?

Accepted Answer

A)  limited resource availability
B)  increases in predator populations
C)  competition between members
D)  competition with other species
E)  All of these choices limit exponential growth.F) B) and E)
G) A) and B)

Question 2

Early this spring researchers have recently discovered that there is one small remnant population of endangered bluegrass left in a small prairie plot outside of Kansas City.If there are approximately 850 individuals in the cohort,how many individuals can the researchers expect to find alive at the end of the summer,6 months later?

Accepted Answer

A)  Approximately 1000
B)  Approximately 330
C)  Approximately 700
D)  Approximately 45
E)  None of the individuals will be alive 6 months later.F) C) and E)
G) C) and D)

Question 3

Only the LDC's will be experiencing overpopulation growth in the near future.

Accepted Answer

A) True 
 B)False  False

Question 4

A population in which death rates are higher than birth rates,and the prereproductive group is smaller than the reproductive group,is best represented by an age structure diagram with a(n) ______ -shape.

Accepted Answer

A)  bell
B)  urn
C)  pyramid
D)  S
E)  JF) B) and D)
G) B) and C)

Question 5

Many species are held below the environmental carrying capacity by predation.

Accepted Answer

A) True 
 B)False

Question 6

When the number of births plus immigration exceeds the number of deaths plus emigration,a population size will increase.

Accepted Answer

A) True 
 B)False

Question 7

Since the population of the LDCs is still growing at a significant rate,one would correctly assume that the LDCs consume a much larger proportion of the Earth's resources.

Accepted Answer

A) True 
 B)False

Question 8

A type II survivorship curve,drawn by plotting the number of individuals in a given population alive at the beginning of each age interval,is characterized by

Accepted Answer

A)  most individuals dying of old age.
B)  many individuals dying early in life.
C)  individuals dying at a constant rate throughout time.
D)  most individuals dying during their reproductive years.E) A) and B)
F) A) and C)

Question 9

The basic level of an ecological study always begins by looking at how populations interact with each other.

Accepted Answer

A) True 
 B)False

Question 10

All of the following statements about population distribution are true EXCEPT

Accepted Answer

A)  population distribution is the pattern of dispersal of individuals across an area of interest.
B)  environmental conditions,such as climate and altitude,are often limiting factors of distribution.
C)  a population's distribution is calculated as the number of individuals per unit area.
D)  behavioral traits,such as territoriality,can affect the distribution pattern of a population.E) A) and D)
F) A) and C)

Question 11

In trying to limit the growth of a pest,you will have more success if you can reduce the carrying capacity of the environment rather than reduce the population size of the pest.

Accepted Answer

A) True 
 B)False

Question 12

Most species are intermediate between r-strategists and K-strategists,and tend to have a type II survivorship curve.

Accepted Answer

A) True 
 B)False

Question 13

A pond represents a(n) _______ while the minnows represent a(n) ______.

Accepted Answer

A)  population; community
B)  population; ecosystem
C)  ecosystem; population
D)  community; population
E)  ecosystem; communityF) A) and B)
G) C) and E)

Question 14

A(n) _______ consists of all the populations of multiple species interacting in a designated region.

Accepted Answer

A)  ecosystem
B)  community
C)  biosphere
D)  None of the choices are correct.E) C) and D)
F) None of the above B

Question 15

Which variable is not a density-dependent factor?

Accepted Answer

A)  Competition between two male deer for territory.
B)  A red tailed hawk preying upon a population of field mice.
C)  Small pox outbreaks during the 1800's.
D)  An early cold spell that causes the plants in a given area to die off earlier than normal.E) A) and B)
F) A) and C)

Question 16

The deceleration phase of growth always precedes the stable equilibrium phase in exponential growth.

Accepted Answer

A) True 
 B)False  False

Question 17

If the members of a population are small in size,mature early,and have high parity and fecundity,they are ______.

Accepted Answer

A)  K-strategists
B)  r-strategists
C)  neither K-strategists nor r-strategists,but have characteristics of both.D) A) and C)
E) None of the above

Question 18

Dandelions and tent caterpillars,which are r-strategists,are examples of opportunistic species that tend to move in high numbers and rapidly occupy new environments.

Accepted Answer

A) True 
 B)False

Question 19

How is environmental impact measured in a population?

Accepted Answer

A)  Population size and resource consumption.
B)  Population size and resource production.
C)  Number of individuals dying each generation plus birth rates.
D)  All of these are used to measure environmental impact.
E)  None of these are used to measure environmental impact.F) D) and E)
G) C) and D)

Question 20

Farmers sprayed leechi trees to suppress populations of scale insects.This also killed the populations of a predatory lacewing that controlled the numbers of scales.Soon the spraying did no good,and the damage to the leechi from the scales was greater than before spraying had occurred.Few predatory lacewings exist in the trees now because

Accepted Answer

A)  they,too,are insects so they are r-selected.
B)  the scale insect was K-selected and the high number of young included a resistant strain,while the predator was r-selected and will take longer to produce a resistant variety.
C)  the predator was r-selected and was therefore more susceptible to the spray.
D)  the scale insect was r-selected and the high number of young included a resistant strain; the predator was K-selected and will take longer to produce a resistant variety.E) B) and C)
F) A) and D)

Exam 44: Population Ecology

Which of the following factor(s) limit(s) exponential growth of a population?

Correct Answer
verified

Correct Answer
verified

Only the LDC's will be experiencing overpopulation growth in the near future.

Correct Answer
verified
False

A population in which death rates are higher than birth rates,and the prereproductive group is smaller than the reproductive group,is best represented by an age structure diagram with a(n) ______ -shape.

Correct Answer
verified

Many species are held below the environmental carrying capacity by predation.

Correct Answer
verified

When the number of births plus immigration exceeds the number of deaths plus emigration,a population size will increase.

Correct Answer
verified

Since the population of the LDCs is still growing at a significant rate,one would correctly assume that the LDCs consume a much larger proportion of the Earth's resources.

Correct Answer
verified

A type II survivorship curve,drawn by plotting the number of individuals in a given population alive at the beginning of each age interval,is characterized by

Correct Answer
verified

The basic level of an ecological study always begins by looking at how populations interact with each other.

Correct Answer
verified

All of the following statements about population distribution are true EXCEPT

Correct Answer
verified

In trying to limit the growth of a pest,you will have more success if you can reduce the carrying capacity of the environment rather than reduce the population size of the pest.

Correct Answer
verified

Most species are intermediate between r-strategists and K-strategists,and tend to have a type II survivorship curve.

Correct Answer
verified

A pond represents a(n) _ while the minnows represent a(n) .

Correct Answer
verified

A(n) _______ consists of all the populations of multiple species interacting in a designated region.

Correct Answer
verified
B

Which variable is not a density-dependent factor?

Correct Answer
verified

The deceleration phase of growth always precedes the stable equilibrium phase in exponential growth.

Correct Answer
verified
False

If the members of a population are small in size,mature early,and have high parity and fecundity,they are ______.

Correct Answer
verified

Dandelions and tent caterpillars,which are r-strategists,are examples of opportunistic species that tend to move in high numbers and rapidly occupy new environments.

Correct Answer
verified

How is environmental impact measured in a population?

Correct Answer
verified

Correct Answer
verified

Exam 44: Population Ecology

Which of the following factor(s) limit(s) exponential growth of a population?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Only the LDC's will be experiencing overpopulation growth in the near future.

Correct AnswerverifiedFalse

A population in which death rates are higher than birth rates,and the prereproductive group is smaller than the reproductive group,is best represented by an age structure diagram with a(n) ______ -shape.

Correct AnswerverifiedShow Answer

Many species are held below the environmental carrying capacity by predation.

Correct AnswerverifiedShow Answer

When the number of births plus immigration exceeds the number of deaths plus emigration,a population size will increase.

Correct AnswerverifiedShow Answer

Since the population of the LDCs is still growing at a significant rate,one would correctly assume that the LDCs consume a much larger proportion of the Earth's resources.

Correct AnswerverifiedShow Answer

A type II survivorship curve,drawn by plotting the number of individuals in a given population alive at the beginning of each age interval,is characterized by

Correct AnswerverifiedShow Answer

The basic level of an ecological study always begins by looking at how populations interact with each other.

Correct AnswerverifiedShow Answer

All of the following statements about population distribution are true EXCEPT

Correct AnswerverifiedShow Answer

In trying to limit the growth of a pest,you will have more success if you can reduce the carrying capacity of the environment rather than reduce the population size of the pest.

Correct AnswerverifiedShow Answer

Most species are intermediate between r-strategists and K-strategists,and tend to have a type II survivorship curve.

Correct AnswerverifiedShow Answer

A pond represents a(n) _______ while the minnows represent a(n) ______.

Correct AnswerverifiedShow Answer

A(n) _______ consists of all the populations of multiple species interacting in a designated region.

Correct AnswerverifiedB

Which variable is not a density-dependent factor?

Correct AnswerverifiedShow Answer

The deceleration phase of growth always precedes the stable equilibrium phase in exponential growth.

Correct AnswerverifiedFalse

If the members of a population are small in size,mature early,and have high parity and fecundity,they are ______.

Correct AnswerverifiedShow Answer

Dandelions and tent caterpillars,which are r-strategists,are examples of opportunistic species that tend to move in high numbers and rapidly occupy new environments.

Correct AnswerverifiedShow Answer

How is environmental impact measured in a population?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
False

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

A pond represents a(n) _ while the minnows represent a(n) .

Correct Answer
verified

Correct Answer
verified
B

Correct Answer
verified

Correct Answer
verified
False

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified