Question 1

The demographic transition

Accepted Answer

A)  occurs when populations exceed their carrying capacity. 
B)  is delayed by industrialization. 
C)  occurs when the death rate increases to meet the birth rate. 
D)  occurs when the birth rate declines to meet the death rate. 
E)  none of the above 
A)  occurs when populations exceed their carrying capacity. 
B)  is delayed by industrialization. 
C)  occurs when the death rate increases to meet the birth rate. 
D)  occurs when the birth rate declines to meet the death rate. 
E)  none of the above D

Question 2

A Type I survivorship curve is characterized by

Accepted Answer

A)  low infant mortality. 
B)  high infant mortality. 
C)  a long lifespan. 
D)  a constant mortality rate. 
E)  none of the above 
A)  low infant mortality. 
B)  high infant mortality. 
C)  a long lifespan. 
D)  a constant mortality rate. 
E)  none of the above B

Question 3

Immigration and emigration are always balanced.

Accepted Answer

A) True 
 B)False  False

Question 4

In a Type III survivorship curve mortality is highest _________________

Accepted Answer

in younger

Question 5

In an analysis of population distribution using the Poisson distribution you find that the mean number of individuals per grid square is larger than the variance in the number of individuals per grid square. This suggests that the population distribution is_______________.

Accepted Answer

The answer of In an analysis of population distribution using...

Question 6

The deme and ecological population are identical in size.

Accepted Answer

A) True 
 B)False

Question 7

In a Type II survivorship curve mortality is constant with age.

Accepted Answer

A) True 
 B)False

Question 8

Explain the difference between a cohort and static life table.

Accepted Answer

A cohort life table follows one group of

Question 9

lx m measures the age specific reproductive rate.

Accepted Answer

A) True 
 B)False

Question 10

The Janzen-Connell hypothesis

Accepted Answer

A)  does not apply to coral reefs. 
B)  does not apply to tropical forests. 
C)  predicts that juvenile mortality increases with distance from adults. 
D)  predicts that juvenile mortality decreases with distance from adults. 
E)  none of the above 
A)  does not apply to coral reefs. 
B)  does not apply to tropical forests. 
C)  predicts that juvenile mortality increases with distance from adults. 
D)  predicts that juvenile mortality decreases with distance from adults. 
E)  none of the above

Question 11

An index of relative abundance

Accepted Answer

A)  is based on mark-recapture. 
B)  can determine the proportional change in the population. 
C)  can determine the exact population size. 
D)  requires the direct observation of individuals. 
E)  none of the above 
A)  is based on mark-recapture. 
B)  can determine the proportional change in the population. 
C)  can determine the exact population size. 
D)  requires the direct observation of individuals. 
E)  none of the above

Question 12

Cohort life tables are more accurate than static life tables.

Accepted Answer

A) True 
 B)False

Question 13

The Poisson distribution describes a population distribution

Accepted Answer

A)  if the population is distributed randomly. 
B)  if the population size is changing. 
C)  independently of the grid size. 
D)  all of the above 
E)  none of the above 
A)  if the population is distributed randomly. 
B)  if the population size is changing. 
C)  independently of the grid size. 
D)  all of the above 
E)  none of the above

Question 14

A deme is defined as _________________.

Accepted Answer

A group of

Question 15

Connectivity increases when

Accepted Answer

A)  dispersal is frequent. 
B)  there are habitat barriers to dispersal. 
C)  population boundaries are undefined. 
D)  all of the above 
E)  none of the above 
A)  dispersal is frequent. 
B)  there are habitat barriers to dispersal. 
C)  population boundaries are undefined. 
D)  all of the above 
E)  none of the above

Question 16

The multiplicative growth rate (λ)

Accepted Answer

A)  is the numerical factor by which the population increases in each time period. 
B)  applies only to populations with overlapping generations. 
C)  is the same as the value of R0. 
D)  is independent of time. 
E)  none of the above 
A)  is the numerical factor by which the population increases in each time period. 
B)  applies only to populations with overlapping generations. 
C)  is the same as the value of R0. 
D)  is independent of time. 
E)  none of the above

Question 17

Which of the following is not an important determinant of population change?

Accepted Answer

A)  B (birth rate) 
B)  D (death rate 
C)  C (connectivity) 
D)  E (emigration) 
E)  none of the above 
A)  B (birth rate) 
B)  D (death rate 
C)  C (connectivity) 
D)  E (emigration) 
E)  none of the above

Question 18

The distribution of resources can determine population dispersion.

Accepted Answer

A) True 
 B)False

Question 19

The following values are known from a population analysis by the Lincoln index: number marked at time 1 = 20; number unmarked at time 2 = 30; number of marked animals captured at time 2 = 10. The population size is

Accepted Answer

A)  10. 
B)  20. 
C)  40. 
D)  60. 
E)  none of the above 
A)  10. 
B)  20. 
C)  40. 
D)  60. 
E)  none of the above

Question 20

The Janzen-Connell hypothesis states that

Accepted Answer

A)  seed predators are randomly distributed. 
B)  seeds near the tree are more successful than distant seeds. 
C)  tropical trees are highly clumped. 
D)  seeds at great distance from the parent avoid seed predation. 
E)  none of the above 
A)  seed predators are randomly distributed. 
B)  seeds near the tree are more successful than distant seeds. 
C)  tropical trees are highly clumped. 
D)  seeds at great distance from the parent avoid seed predation. 
E)  none of the above

Exam 8: Demography

The demographic transition

A Type I survivorship curve is characterized by

Immigration and emigration are always balanced.

In a Type III survivorship curve mortality is highest _________________

In an analysis of population distribution using the Poisson distribution you find that the mean number of individuals per grid square is larger than the variance in the number of individuals per grid square. This suggests that the population distribution is_______________.

The deme and ecological population are identical in size.

In a Type II survivorship curve mortality is constant with age.

Explain the difference between a cohort and static life table.

lx m measures the age specific reproductive rate.

The Janzen-Connell hypothesis

An index of relative abundance

Cohort life tables are more accurate than static life tables.

The Poisson distribution describes a population distribution

A deme is defined as _________________.

Connectivity increases when

The multiplicative growth rate (λ)

Which of the following is not an important determinant of population change?

The distribution of resources can determine population dispersion.

The following values are known from a population analysis by the Lincoln index: number marked at time 1 = 20; number unmarked at time 2 = 30; number of marked animals captured at time 2 = 10. The population size is

The Janzen-Connell hypothesis states that

Introduction to Ecology

Adaptation and Evolution

Adaptations to the Physical Environment

Terrestrial Communities

Fresh-water and Marine Communities

Behavioral Ecology

The Ecology of Intraspecific Variation

Population Regulation

Life History Strategies

Competition

Coevolution I Exploitative Interactions

Mutualism

The Structure of Communities

Ecological Succession

Species Diversity

Energy Flow and Trophic Structure

Biogeochemical Cycles

Conservation Biology

Landscape Ecology

Human Global Ecology

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l_x m measures the age specific reproductive rate.