Population Ecology 1

12 Questions

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Ecology Quizzes & Trivia

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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