Question 1

In the most basic terms, a population's growth is a function of births and deaths.

Accepted Answer

A) True 
 B)False  True

Question 2

Human populations are clumped on a large scale with the greatest concentration in

Accepted Answer

A)  Africa. 
B)  Europe. 
C)  Asia. 
D)  North America. 
E)  South America. 
A)  Africa. 
B)  Europe. 
C)  Asia. 
D)  North America. 
E)  South America. C

Question 3

Logistic growth has been documented in which of the following populations?

Accepted Answer

A)  Eurasian collared dove 
B)  Barnacle, Balanus balanoides 
C)  Yeast, Saccharomyces cerevisiae 
D)  Northern elephant seal 
E)  All of the choices are correct. 
A)  Eurasian collared dove 
B)  Barnacle, Balanus balanoides 
C)  Yeast, Saccharomyces cerevisiae 
D)  Northern elephant seal 
E)  All of the choices are correct. E

Question 4

If the age distribution diagram is bottom heavy or pyramidal in shape, this indicates that the population is

Accepted Answer

A)  stable. 
B)  declining. 
C)  growing slowly. 
D)  growing rapidly. 
E)  cannot be determined 
A)  stable. 
B)  declining. 
C)  growing slowly. 
D)  growing rapidly. 
E)  cannot be determined

Question 5

dN/dt = rmaxN represents

Accepted Answer

A)  annual growth rate. 
B)  geometric population growth. 
C)  exponential population growth. 
D)  logistic growth. 
E)  None of the choices are correct. 
A)  annual growth rate. 
B)  geometric population growth. 
C)  exponential population growth. 
D)  logistic growth. 
E)  None of the choices are correct.

Question 6

If the age distribution diagram is bell shaped or the number of individuals in each age class is evenly distributed, this indicates that the population is

Accepted Answer

A)  stable. 
B)  declining. 
C)  growing slowly. 
D)  growing rapidly. 
E)  not able to be determined. 
A)  stable. 
B)  declining. 
C)  growing slowly. 
D)  growing rapidly. 
E)  not able to be determined.

Question 7

The exponential population growth equation can be used for

Accepted Answer

A)  populations with overlapping generations. 
B)  populations experiencing continuous growth. 
C)  populations with nonpulsed reproduction. 
D)  populations with overlapping generations and populations experiencing continuous growth. 
E)  populations with overlapping generations, populations experiencing continuous growth, and populations with nonpulsed reproduction. 
A)  populations with overlapping generations. 
B)  populations experiencing continuous growth. 
C)  populations with nonpulsed reproduction. 
D)  populations with overlapping generations and populations experiencing continuous growth. 
E)  populations with overlapping generations, populations experiencing continuous growth, and populations with nonpulsed reproduction.

Question 8

Nt = N0 λt represents

Accepted Answer

A)  geometric population growth. 
B)  annual growth rate. 
C)  exponential growth rate. 
D)  logistic growth. 
E)  None of the choices are correct. 
A)  geometric population growth. 
B)  annual growth rate. 
C)  exponential growth rate. 
D)  logistic growth. 
E)  None of the choices are correct.

Question 9

An annual plant when initially colonizing an area will probably demonstrate

Accepted Answer

A)  annual growth rate. 
B)  geometric population growth. 
C)  exponential growth rate. 
D)  logistic growth. 
E)  None of the choices are correct. 
A)  annual growth rate. 
B)  geometric population growth. 
C)  exponential growth rate. 
D)  logistic growth. 
E)  None of the choices are correct.

Question 10

What is a valid explanation for why unlimited population growth cannot be maintained for many generations? (Select all that apply.)

Accepted Answer

A)  The population would soon run out of space for new individuals. 
B)  The population would soon run out of food resources. 
C)  By definition, exponential growth requires low population densities. 
D)  Individuals would not have sufficient breeding opportunties. 
A)  The population would soon run out of space for new individuals. 
B)  The population would soon run out of food resources. 
C)  By definition, exponential growth requires low population densities. 
D)  Individuals would not have sufficient breeding opportunties.

Question 11

Growth by any population with pulsed reproduction can be modeled as

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 12

dN/dt = rmaxN [(K - N)/K] represents

Accepted Answer

A)  annual growth rate. 
B)  geometric population growth. 
C)  exponential growth rate. 
D)  logistic growth. 
E)  None of the choices are correct. 
A)  annual growth rate. 
B)  geometric population growth. 
C)  exponential growth rate. 
D)  logistic growth. 
E)  None of the choices are correct.

Question 13

In the logistic model of population growth if r>0 then

Accepted Answer

A) the population declines. B) population growth stops. C) N>K. D) NK. D) N

Question 14

"N/K" for a population can represent

Accepted Answer

A)  environmental resistance. 
B)  logistic component. 
C)  population size decrease. 
D)  both environmental resistance and logistic component. 
E)  both logistic component and population size decrease. 
A)  environmental resistance. 
B)  logistic component. 
C)  population size decrease. 
D)  both environmental resistance and logistic component. 
E)  both logistic component and population size decrease.

Question 15

If the age distribution diagram has the smallest concentration of individuals in the bottom portion or is considered to be an urn shape, this indicates that

Accepted Answer

A)  the population is stable. 
B)  the population is declining. 
C)  the population is growing slowly. 
D)  the population is growing rapidly. 
E)  This answer cannot be determined. 
A)  the population is stable. 
B)  the population is declining. 
C)  the population is growing slowly. 
D)  the population is growing rapidly. 
E)  This answer cannot be determined.

Question 16

Density dependent factors include all of the following except

Accepted Answer

A)  competition. 
B)  disease. 
C)  predation. 
D)  temperature. 
E)  None of the choices are correct. 
A)  competition. 
B)  disease. 
C)  predation. 
D)  temperature. 
E)  None of the choices are correct.

Question 17

The biotic potential of an organism produces the leveling off at carrying capacity in the logistic growth curve.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following is/are mismatched?

Accepted Answer

A)  rmax = intrinsic rate of increase 
B)  K = carrying capacity 
C)  Nt = annual growth rate 
D)  t = time interval 
E)  dN/dt = rate of population change 
A)  rmax = intrinsic rate of increase 
B)  K = carrying capacity 
C)  Nt = annual growth rate 
D)  t = time interval 
E)  dN/dt = rate of population change

Question 19

If the initial population size is 996 plants and the geometric rate of increase is 2.4177, calculate the population size after eight years for the annual plant Phlox drummondii.

Accepted Answer

A)  198,918 
B)  480,924 
C)  1,162,730 
D)  2,811,131 
E)  cannot be determined with the information given 
A)  198,918 
B)  480,924 
C)  1,162,730 
D)  2,811,131 
E)  cannot be determined with the information given

Question 20

The best model for population growth of an annual plant like Phlox drummondii is

Accepted Answer

A)  geometric growth. 
B)  exponential growth. 
C)  logistic growth. 
D)  geometric growth during years with high rainfall and exponential growth during years with low rainfall. 
E)  geometric growth during years with high rainfall and logistic growth during years with low rainfall. 
A)  geometric growth. 
B)  exponential growth. 
C)  logistic growth. 
D)  geometric growth during years with high rainfall and exponential growth during years with low rainfall. 
E)  geometric growth during years with high rainfall and logistic growth during years with low rainfall.

Exam 11: Population Growth

In the most basic terms, a population's growth is a function of births and deaths.

Human populations are clumped on a large scale with the greatest concentration in

Logistic growth has been documented in which of the following populations?

If the age distribution diagram is bottom heavy or pyramidal in shape, this indicates that the population is

dN/dt = rmaxN represents

If the age distribution diagram is bell shaped or the number of individuals in each age class is evenly distributed, this indicates that the population is

The exponential population growth equation can be used for

Nt = N0 λt represents

An annual plant when initially colonizing an area will probably demonstrate

What is a valid explanation for why unlimited population growth cannot be maintained for many generations? (Select all that apply.)

Growth by any population with pulsed reproduction can be modeled as

dN/dt = rmaxN [(K - N)/K] represents

In the logistic model of population growth if r>0 then

"N/K" for a population can represent

If the age distribution diagram has the smallest concentration of individuals in the bottom portion or is considered to be an urn shape, this indicates that

Density dependent factors include all of the following except

The biotic potential of an organism produces the leveling off at carrying capacity in the logistic growth curve.

Which of the following is/are mismatched?

If the initial population size is 996 plants and the geometric rate of increase is 2.4177, calculate the population size after eight years for the annual plant Phlox drummondii.

The best model for population growth of an annual plant like Phlox drummondii is

Introduction to Ecology: Historical Foundations and Developing Frontiers

Life on Land

Life in Water

Population Genetics and Natural Selection

Temperature Relations

Water Relations

Energy and Nutrient Relations

Social Relations

Population Distribution and Abundance

Population Dynamics

Life Histories

Competition

Exploitative Interactions: Predation, Herbivory, Parasitism, and Disease

Mutualism

Species Abundance and Diversity

Species Interactions and Community Structure

Primary Production and Energy Flow

Nutrient Cycling and Retention

Succession and Stability

Landscape Ecology

Geographic Ecology

Global Ecology

Filters

dN/dt = r_maxN represents

N_t = N₀ λ^t represents

dN/dt = r_maxN [(K - N)/K] represents