Question 1

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. D

Question 2

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 3

A population is __________________________ if N>K and the per capita rate of increase is negative.

Accepted Answer

declining

Question 4

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.

Question 5

If the age distribution diagram is bell shaped or the number of individual 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.
Learning Outcome: 11.Applications.02 Distinguish between stable,declining and growing populations,using age distributions. 
A) stable. 
B) declining. 
C) growing slowly. 
D) growing rapidly. 
E) not able to be determined.
Learning Outcome: 11.Applications.02 Distinguish between stable,declining and growing populations,using age distributions.

Question 6

The factors that determine carrying capacity include all of the following except:

Accepted Answer

A) space. 
B) disease. 
C) food. 
D) competition. 
E) None of the choices are correct. 
A) space. 
B) disease. 
C) food. 
D) competition. 
E) None of the choices are correct.

Question 7

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 8

Which of the following statements is/are true?

Accepted Answer

A) Population growth in humans can be represented by an S curve. 
B) The human population has reached carry capacity. 
C) Population growth in humans is exponential. 
D) Human population growth is not effected by density dependent factors. 
E) Both population growth in humans can be represented by an S curve and the human population has reached carry capacity. 
A) Population growth in humans can be represented by an S curve. 
B) The human population has reached carry capacity. 
C) Population growth in humans is exponential. 
D) Human population growth is not effected by density dependent factors. 
E) Both population growth in humans can be represented by an S curve and the human population has reached carry capacity.

Question 9

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.

Question 10

Nt = N0 $\lambda$t 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 11

In the logistic model of population growth if N>K then

Accepted Answer

A) r is zero. 
B) the population expands. 
C) r is negative. 
D) the population declines. 
E) both r is negative and the population declines. 
A) r is zero. 
B) the population expands. 
C) r is negative. 
D) the population declines. 
E) both r is negative and the population declines.

Question 12

Growth by any population with pulsed reproduction can be modeled as

Accepted Answer

A)  $\frac { d N } { d t } = r _ { \max } N \left( \frac { K - N } { K } \right)$ 
B)  $\frac { d N } { d t } = r _ { \max } N$ 
C)  $N _ { t } = N _ { 0 } e ^ { r _ { \max } N }$ 
D)  $N _ { t } = N _ { 0 } \lambda ^ { t }$ 
E)  $\frac { d N } { d t } = r _ { \max } N \left( 1 - \frac { N } { K } \right)$ 
A)  $\frac { d N } { d t } = r _ { \max } N \left( \frac { K - N } { K } \right)$ 
B)  $\frac { d N } { d t } = r _ { \max } N$ 
C)  $N _ { t } = N _ { 0 } e ^ { r _ { \max } N }$ 
D)  $N _ { t } = N _ { 0 } \lambda ^ { t }$ 
E)  $\frac { d N } { d t } = r _ { \max } N \left( 1 - \frac { N } { K } \right)$

Question 13

Logistic population growth produces a __________ population growth curve.

Accepted Answer

A) J-shaped 
B) K-shaped 
C) N-shaped 
D) R-shaped 
E) S-shaped 
A) J-shaped 
B) K-shaped 
C) N-shaped 
D) R-shaped 
E) S-shaped

Question 14

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 15

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) both populations with overlapping generations and populations experiencing continuous growth. 
E) both 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) both populations with overlapping generations and populations experiencing continuous growth. 
E) both populations with overlapping generations,populations experiencing continuous growth,and populations with nonpulsed reproduction.

Question 16

Environmental limitation is incorporated into which model of population growth?

Accepted Answer

A)  $\frac { d N } { d t } = r _ { \max } N \left( \frac { K - N } { K } \right)$ 
B)  $\frac { d N } { d t } = r _ { \max } N$ 
C)  $\frac { d N } { d t } = r _ { \max } N \left( 1 - \frac { N } { K } \right)$ 
D)  $N _ { 1 } = N _ { 0 } d ^ { t }$ 
E) both $\frac { d N } { d t } = r _ { \max } N \left( \frac { K - N } { K } \right)$ and
$\frac { d N } { d t } = r _ { \max } N \left( 1 - \frac { N } { K } \right)$ 
A)  $\frac { d N } { d t } = r _ { \max } N \left( \frac { K - N } { K } \right)$ 
B)  $\frac { d N } { d t } = r _ { \max } N$ 
C)  $\frac { d N } { d t } = r _ { \max } N \left( 1 - \frac { N } { K } \right)$ 
D)  $N _ { 1 } = N _ { 0 } d ^ { t }$ 
E) both $\frac { d N } { d t } = r _ { \max } N \left( \frac { K - N } { K } \right)$ and
$\frac { d N } { d t } = r _ { \max } N \left( 1 - \frac { N } { K } \right)$

Question 17

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

Accepted Answer

A) the population expands. 
B) the population declines. 
C) N>K 
D) N=K 
E) both the population declines and N>K 
A) the population expands. 
B) the population declines. 
C) N>K 
D) N=K 
E) both the population declines and N>K

Question 18

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 19

Grant and Grants' study on the large cactus finches (Geospiza conirostris)positively correlates ____________________ and egg clutches.

Accepted Answer

The answer of Grant and Grants' study on the large...

Question 20

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.

Exam 11: Population Growth

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

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

A population is __________________________ if N>K and the per capita rate of increase is negative.

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

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

The factors that determine carrying capacity include all of the following except:

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

Which of the following statements is/are true?

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

Nt = N0 λ\lambdaλ t represents

In the logistic model of population growth if N>K then

Growth by any population with pulsed reproduction can be modeled as

Logistic population growth produces a __________ population growth curve.

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

The exponential population growth equation can be used for

Environmental limitation is incorporated into which model of population growth?

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

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.

Grant and Grants' study on the large cactus finches (Geospiza conirostris)positively correlates ____________________ and egg clutches.

Density dependent factors include all of the following except:

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 [(K - N)/K] represents

N_t = N₀ $\lambda$ ^t represents