12 Questions

.

Questions and Answers

- 1.The growth rate of a population is expressed as:
- A.
B-d

- B.
I-e

- C.
K-N

- D.
DN/r

- E.
(K-N)/K

- 2.
- A.
Increases

- B.
Decreases

- C.
Is stable

- D.
May increase or decrease, depending on K

- E.
May increase or decrease, depending on i

- 3.
- A.
Rapidly increase

- B.
Slowly increase

- C.
Slowly decrease

- D.
Rapidly decrease

- E.
Stabilize

- 4.At zero population growth:
- A.
B=d

- B.
B>d

- C.
B

- D.
R>0

- E.
None of the responses are correct

- 5.
- A.
True

- B.
False

- 6.Plotting
*rmax*would show the maximum exponential growth rate of the population- A.
True

- B.
False

- 7.The logistic equation:
- A.
Models a J-shaped curve

- B.
Takes into account the carrying capacity of the environment

- C.
Shows continued exponential growth

- D.
Would characterize the uncontrolled growth of a population

- E.
Models a K-shaped growth curve

- 8.Logistic growth of a population is represented by dN/dt =
- A.
RN/K

- B.
RN

- C.
RN((K-N)/K))

- D.
RN((N-K)/K))

- 9.Exponential growth of a population is represented by dN/dt =
- A.
RN/K

- B.
RN

- C.
RN(K+N)

- D.
RN((K-N)/K))

- E.
RN((N-K)/K))

- 10.All of the following statements about the logistic model of a population growth are correct EXCEPT:
- A.
It fits an S-shaped curve

- B.
It incorporates the concept of carrying capacity

- C.
It describes population density shifts over time

- D.
It accurately predicts the growth of most populations

- E.
It predicts an eventual state in which birth rates equal death rates

- 11.As N approaches K for a certain population, which of the following is predicted by the logistic equation?
- A.
The growth rate will not change

- B.
The growth rate will approach zero

- C.
The population will increase exponentially

- D.
The carrying capacity of the environment will increase

- 12.In the logisitc equation
*dN/dt = rN, ((K-N)/K)), r*is a measure of the population's intrinsic rate of increase. It is determined by which of the following?- A.
Birth rate

- B.
Death rate

- C.
Density

- D.
Both A and B are correct

- E.
A, B and C are correct