Population Dynamics - Ecology
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20 QuestionsShow answers
  • Question 1
    30 seconds
    Q. To measure population density, you must divide the number of individuals living in a defined space by the
    answer choices
    area of the space
    birth and death rates
    carrying capacity
    height of the space
  • Question 2
    30 seconds
    Q. Nesting birds often space themselves evenly from other nests. This pattern is called
    answer choices
    clumped dispersion.
    uniform dispersion.
    random dispersion
    scatter dispersion
  • Question 3
    30 seconds
    Q. Which of the following will increase the size of a population?
    answer choices
    emigration and births
    immigration and deaths
    immigration and births
    emigration and deaths
  • Question 4
    30 seconds
    Q. Which of the following is a density-dependent limiting factor?
    answer choices
    human activities 
    unusual weather
    competition
    natural disaster
  • Question 5
    30 seconds
    Q. Which of the following statements about primary succession is true?
    answer choices
    It begins with a climax community
    Small mammals are the first to live there
    It begins with bare rock
    It begins with rock and soil
  • Question 6
    30 seconds
    Q. What type of growth is shown on this graph?
    answer choices
    logistic
    exponential
    average
    density-independent
  • Question 7
    30 seconds
    Q. Which of the following is a density-independent limiting factor?
    answer choices
    natural disaster
    predation
    disease
    parasitism
  • Question 8
    30 seconds
    Q. The way in which individuals of a population are spread out is called
    answer choices
    population density
    survivorship
    population dispersion
    logistic curve
  • Question 9
    30 seconds
    Q. The movement of a single caribou into a herd is an example of
    answer choices
    population
    immigration
    emigration
    predation
  • Question 10
    30 seconds
    Q. What pattern of growth will a population with limited resources show?
    answer choices
    density-dependent
    exponential 
    logistic
    logical 
  • Question 11
    30 seconds
    Q. Diseases may spread more rapidly when an area is crowded, so disease is considered to be a
    answer choices
    type I survivorship curve
    population crasher
    density-dependent limiting factor
    population enhancer
  • Question 12
    30 seconds
    Q. What type of population growth is shown in the graph?  
    answer choices
    logistic growth
    logical growth
    exponential growth
    density-dependent growth
  • Question 13
    30 seconds
    Q. A sequence of biotic changes that regenerate or create an ecological community is known as
    answer choices
    factors
    erosion
    succession
    progression
  • Question 14
    30 seconds
    Q. Lichens and mosses that first live in uninhabited areas are examples of
    answer choices
    secondary species
    non-native species
    pioneer species
    climax species
  • Question 15
    30 seconds
    Q. Secondary succession is most likely to occur
    answer choices
    on a volcanic island
    after a rainstorm
    after a Thanksgiving Turkey dinner
    after a forest fire
  • Question 16
    30 seconds
    Q.  At what amount of yeast does the population in Figure 14.3 level off?
    answer choices
    3.0 mg/cc
    1.5 mg/cc
    6.0 mg/cc
    4.5 mg/cc
  • Question 17
    30 seconds
    Q.  What is the name for this leveling off shown in the graph?
    answer choices
    logistic line
    carrying capacity
    climax point
    mediocre
  • Question 18
    30 seconds
    Q. After how many hours does the yeast population shown in the graph reach its carrying capacity?
    answer choices
    15 hours
    10 hours
    6 hours
    At the start
  • Question 19
    30 seconds
    Q. What is the amount of yeast shown in the graph at the 6-hour mark?
    answer choices
    6.0 mg/cc
    3.0 mg/cc
    1.5 mg/cc
    10 mg/cc
  • Question 20
    30 seconds
    Q. What 2 factors decrease population size?
    answer choices
    Immigration, Births
    Emigration, Births
    Emigration, Deaths
    Immigration, Deaths
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