Deck 11: Population Growth

Question 1

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.

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

Answer 1

C

Question 2

Environmental limitation is incorporated into which model of population growth?

A)
B)
C)
D)
E) both and

Answer 2

E

Question 3

N_t = N₀ $\lambda$ ^t represents

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

Answer 3

geometric population growth.

Question 4

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

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 5

Growth by any population with pulsed reproduction can be modeled as

A)
B)
C)
D)
E)

Question 6

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

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

Question 7

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

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

Question 8

Which of the following statements is/are true?

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

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

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

Question 10

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

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 11

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

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

Question 12

The exponential population growth equation can be used for

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 13

Density dependent factors include all of the following except:

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

Question 14

An annual plant when initially colonizing an area will probably demonstrate

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

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

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

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

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

Question 17

Which of the following is/are mismatched?

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

Question 18

dN/dt = r_maxN represents

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

Question 19

Logistic population growth produces a __________ population growth curve.

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

Question 20

'N/K' for a population can represent

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 21

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

Question 22

In a logistic model,when N = K the population stops growing and r = 0.

Question 23

Occasionally,density independent factors can influence populations in a density dependent manner.

Question 24

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

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

Question 25

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

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 26

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

Question 27

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

Question 28

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

Question 29

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

A) the population declines.
B) population growth stops.
C) N>K.
D) NE) both the population declines and N