Question 1

Type II survivorship curves

Accepted Answer

A)   are characteristics of humans and elephants.
B)   typify a population in which all ages have an equal chance of survival.
C)   indicate a high mortality rate in the very young.
D)   show that very few young are produced, that each is given parental support, and that most individuals live a relatively long life and die of old age.
E)   are typical of annual plants.F) A) and B)
G) A) and C)

Question 2

Most octopuses die early in life; those that survive can live up to 5 years. Octopuses are best characterized by a type __ survivorship curve.

Accepted Answer

A)   I
B)   II
C)   III
D)   more than one of these
E)   none of theseF) A) and D)
G) B) and E)

Question 3

The most common type of population distribution is

Accepted Answer

A)   clumped.
B)   uniform.
C)   random.
D)   near-uniform.
E)   semi-random.F) A) and D)
G) A) and C)

Question 4

The countries of ___ and ___ have the world's highest human populations.

Accepted Answer

A)   India...China
B)   China...United States
C)   China...Brazil
D)   India...United States
E)   United States...CanadaF) B) and C)
G) A) and B)

Question 5

E. coli is an intestinal bacterium that reproduces at a rate of every 20 minutes. E. coli is representative of a ___ species.

Accepted Answer

A)   r-selected
B)   K-selected
C)   type I
D)   logarithmic type-curve
E)   more than one of theseF) C) and D)
G) C) and E)

Question 6

Match between columns
                        Premises: Death rate drops fast; birth rate declines slowly
Factors that affect the growth of a population regardless of the number of individuals in that population.
This describes a population that grows slowly at first then increases rapidly until it reaches carrying capacity.
Short life span, many offspring, minimal care of young
Elephants, humans, and dogs all fit into this model
Given unlimited resources, what organisms will achieve
Long life spans, few offspring, extended care of young
A harsh winter is an example of this.
Pandemics are examples of this
Clams, insects, many fish species fit into this model

Accepted Answer

The Answer of density-independent factor. and biotic potential and type is...

Question 7

If reproduction occurs early in the life cycle, what occurs?

Accepted Answer

A)   Population growth rate increases.
B)   Population size declines.
C)   Population size is not affected.
D)   Generation time increases.
E)   Growth rate remains unchanged.F) A) and D)
G) C) and D)

Question 8

In a population of Asian elephants, the death rate equals the birth rate. This population has

Accepted Answer

A)   reached its biotic potential.
B)   achieved zero population growth.
C)   not exceeded its carrying capacity.
D)   exponential growth.
E)   geometric growth.F) A) and C)
G) A) and E)

Question 9

Density-independent controls over population growth include

Accepted Answer

A)   parasites.
B)   temperature.
C)   disease.
D)   competition.
E)   all of these.F) B) and E)
G) C) and D)

Question 10

Which of the following is NOT related to the study of population demographics?

Accepted Answer

A)   in a lake, there are 5 rainbow trout per 50 square meters
B)   in Yellowstone National Park, there are approximately 3,000 American bison
C)   African wild dogs live in packs distinct from each other and scattered through the savanna
D)   cheetahs are most successful at catching gazelles
E)   cacti grow in the desert more or less evenly spaced from each otherF) C) and E)
G) A) and E)

Question 11

Which of the following is NOT a factor in a life history?

Accepted Answer

A)   rate of development
B)   age at first reproduction
C)   population density
D)   life span
E)   all of these are factors in a life historyF) B) and C)
G) A) and E)

Question 12

The carrying capacity of an environment is increased by

Accepted Answer

A)   pollution.
B)   predation.
C)   disease.
D)   population growth.
E)   none of these.F) A) and D)
G) B) and E)

Question 13

Match between columns
                        Premises: the birth rate minus the death rate
distribution of individuals among various age groups
the number of organisms of a particular population in a given area
the number of individuals a given area can sustain
the United States has the biggest one of these
the amount of the Earth's surface needed to sustain a population's life habits
a necessary resource, the depletion of which halts population growth

Accepted Answer

The Answer of carrying capacity and population density and age is...

Question 14

Modern humans evolved in ___ about ___ years ago.

Accepted Answer

A)   Africa...43,000
B)   Africa...200,000
C)   Africa...2,000,000
D)   Asia...43,000
E)   Asia...200,000F) B) and E)
G) C) and D)

Question 15

Increasingly population density will most likely lead to which type of distribution pattern?

Accepted Answer

A)   clumped
B)   random
C)   uniform
D)   uniform and clumped
E)   random and clumpedF) B) and E)
G) A) and B)

Question 16

A cohort is

Accepted Answer

A)   a collection of same-aged individuals of the same species.
B)   any member of the same species.
C)   any member of the same species and sex within a population.
D)   a sexual mate.
E)   a litter mate or sibling within a large population.F) None of the above
G) A) and D)

Question 17

Uniform distribution of human habitat would likely be the result of ____, whereas habitats of other animals would be due to ____.

Accepted Answer

A)   competition; social interaction
B)   community planning; competition
C)   social interaction; chemical avoidance
D)   limited mobility; contact inhibition
E)   random chance; planningF) B) and C)
G) A) and E)

Question 18

In a population of 100 Douglas squirrels, the birth rate is 10 per year and the death rate is 20 per year. The per capita growth rate of Douglas squirrels is ___ per squirrel per year.

Accepted Answer

A)   0.2
B)   0.1
C)   0.0
D)   -0.1
E)   -0.2F) A) and C)
G) B) and C)

Question 19

Selecting the Exception Four of the five answers listed below are density-independent factors. Select the EXCEPTION.

Accepted Answer

A)   nutrient supply
B)   temperature drop
C)   drought
D)   volcanic eruption
E)   hard freezeF) A) and B)
G) C) and D)

Question 20

A J-shaped growth curve is converted to an S-shaped one

Accepted Answer

A)   when the parents are past reproductive age.
B)   if the data is plotted in reverse.
C)   when the carrying capacity is reached.
D)   if reproduction is stopped.
E)   only for fast-growing populations such as bacteria.F) A) and D)
G) C) and E)

Exam 16: Population Ecology

A cohort is

Correct Answer
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Increasingly population density will most likely lead to which type of distribution pattern?

Correct Answer
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In a population of 100 Douglas squirrels, the birth rate is 10 per year and the death rate is 20 per year. The per capita growth rate of Douglas squirrels is ___ per squirrel per year.

Correct Answer
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Selecting the Exception Four of the five answers listed below are density-independent factors. Select the EXCEPTION.

Correct Answer
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Density-independent controls over population growth include

Correct Answer
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Match the following letters with the number with which they best correspond.

Which of the following is NOT related to the study of population demographics?

Correct Answer
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Type II survivorship curves

Correct Answer
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If reproduction occurs early in the life cycle, what occurs?

Correct Answer
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The most common type of population distribution is

Correct Answer
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Modern humans evolved in _ about _ years ago.

Correct Answer
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The countries of _ and _ have the world's highest human populations.

Correct Answer
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Most octopuses die early in life; those that survive can live up to 5 years. Octopuses are best characterized by a type __ survivorship curve.

Correct Answer
verified

The carrying capacity of an environment is increased by

Correct Answer
verified

In a population of Asian elephants, the death rate equals the birth rate. This population has

Correct Answer
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Classification . Answer the questions in reference to the seven terms listed below that are used by ecologists.

Which of the following is NOT a factor in a life history?

Correct Answer
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Uniform distribution of human habitat would likely be the result of , whereas habitats of other animals would be due to .

Correct Answer
verified

E. coli is an intestinal bacterium that reproduces at a rate of every 20 minutes. E. coli is representative of a ___ species.

Correct Answer
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A J-shaped growth curve is converted to an S-shaped one

Correct Answer
verified

Exam 16: Population Ecology

A cohort is

Correct AnswerverifiedShow Answer

Increasingly population density will most likely lead to which type of distribution pattern?

Correct AnswerverifiedShow Answer

In a population of 100 Douglas squirrels, the birth rate is 10 per year and the death rate is 20 per year. The per capita growth rate of Douglas squirrels is ___ per squirrel per year.

Correct AnswerverifiedShow Answer

Selecting the Exception Four of the five answers listed below are density-independent factors. Select the EXCEPTION.

Correct AnswerverifiedShow Answer

Density-independent controls over population growth include

Correct AnswerverifiedShow Answer

Match the following letters with the number with which they best correspond.

Which of the following is NOT related to the study of population demographics?

Correct AnswerverifiedShow Answer

Type II survivorship curves

Correct AnswerverifiedShow Answer

If reproduction occurs early in the life cycle, what occurs?

Correct AnswerverifiedShow Answer

The most common type of population distribution is

Correct AnswerverifiedShow Answer

Modern humans evolved in ___ about ___ years ago.

Correct AnswerverifiedShow Answer

The countries of ___ and ___ have the world's highest human populations.

Correct AnswerverifiedShow Answer

Most octopuses die early in life; those that survive can live up to 5 years. Octopuses are best characterized by a type __ survivorship curve.

Correct AnswerverifiedShow Answer

The carrying capacity of an environment is increased by

Correct AnswerverifiedShow Answer

In a population of Asian elephants, the death rate equals the birth rate. This population has

Correct AnswerverifiedShow Answer

Classification . Answer the questions in reference to the seven terms listed below that are used by ecologists.

Which of the following is NOT a factor in a life history?

Correct AnswerverifiedShow Answer

Uniform distribution of human habitat would likely be the result of ____, whereas habitats of other animals would be due to ____.

Correct AnswerverifiedShow Answer

E. coli is an intestinal bacterium that reproduces at a rate of every 20 minutes. E. coli is representative of a ___ species.

Correct AnswerverifiedShow Answer

A J-shaped growth curve is converted to an S-shaped one

Correct AnswerverifiedShow Answer

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Modern humans evolved in _ about _ years ago.

Correct Answer
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The countries of _ and _ have the world's highest human populations.

Correct Answer
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Uniform distribution of human habitat would likely be the result of , whereas habitats of other animals would be due to .

Correct Answer
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Correct Answer
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