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AP Biology Population and Community Ecology — practice questions

Explore 23 free Population and Community Ecology questions in AP Biology Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Population and Community Ecology questions and exercises with answers

Showing questions 1–23 of 23.

The statistical study of population dynamics is called:Read the answer and worked solution →The total number of individuals in a population is its:Read the answer and worked solution →The number of individuals within a specific area or volume is the:Read the answer and worked solution →Which counting technique is used for immobile organisms such as plants?Read the answer and worked solution →Which technique do scientists use for mobile organisms such as mammals, birds or fish?Read the answer and worked solution →Tables detailing the life expectancy of individuals within a population are called:Read the answer and worked solution →Humans and most primates exhibit which survivorship curve?Read the answer and worked solution →Birds are given as an example of which survivorship curve?Read the answer and worked solution →A species that reproduces only once during its lifetime and then dies shows:Read the answer and worked solution →Species that reproduce repeatedly during their lives show:Read the answer and worked solution →Plotting population size N over time under unlimited resources produces which curve shape?Read the answer and worked solution →In logistic growth, expansion levels off when the population reaches the environment's:Read the answer and worked solution →The maximal growth rate for a species, written rmax, is called its:Read the answer and worked solution →Most density-dependent factors are described as biological in nature and include:Read the answer and worked solution →Forest fires and volcanic eruptions are given as examples of factors that are:Read the answer and worked solution →K-selected species are described as species selected by environments that are:Read the answer and worked solution →A female-biased sex ratio or an age structure rich in reproductive-age members can increase:Read the answer and worked solution →A dense population reduced by a density-independent factor will recover:Read the answer and worked solution →Match each population termRead the answer and worked solution →Tap the density-dependent factorsRead the answer and worked solution →Stop on the right curveRead the answer and worked solution →True or false: population ecologyRead the answer and worked solution →Complete the growth storyRead the answer and worked solution →

Worked practice questions

The statistical study of population dynamics is called:

  1. Demography
  2. Taxonomy
  3. Genetics
  4. Anatomy
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Correct answer: A. Demography

1. Population biology has its own quantitative branch. 2. The statistical study of population dynamics is demography. 3. It uses a series of mathematical tools. 4. Those tools investigate how populations respond to their biotic and abiotic environments. _Source: OpenStax Biology 2e (CC BY 4.0), Ch 45 'Population and Community Ecology', sections 45.1-45.4_

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The total number of individuals in a population is its:

  1. Population age
  2. Population size
  3. Population density
  4. Population range
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Correct answer: B. Population size

1. A population is described by more than one number. 2. A population can be characterized by its population size, written N. 3. Population size is the total number of individuals. 4. Density is instead the number of individuals within a specific area or volume. _Source: OpenStax Biology 2e (CC BY 4.0), Ch 45 'Population and Community Ecology', sections 45.1-45.4_

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The number of individuals within a specific area or volume is the:

  1. Population density
  2. Population size
  3. Population growth
  4. Population range
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Correct answer: A. Population density

1. Size and density answer different questions about a population. 2. Population size, N, is the total number of individuals. 3. Population density is the number of individuals within a specific area or volume. 4. Two populations of equal size can have very different densities. _Source: OpenStax Biology 2e (CC BY 4.0), Ch 45 'Population and Community Ecology', sections 45.1-45.4_

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