Ecological Classification Key Terms Quiz
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Questions and Answers

What is the ecological definition provided in the text?

  • A group of organisms that inhabit a specific area and use the same resources (correct)
  • A group of organisms that inhabit a particular area and use varying resources
  • A group of organisms that inhabit a broad region and use shared resources
  • A group of organisms that inhabit various areas and use different resources

    • Which term in the text refers to the distribution of living organisms into specific zones?

  • Biodiversity
  • Sampling
  • Zonation (correct)
  • Stratification

    • What does stratification in ecology primarily refer to?

  • The diversity of species within quadrats
  • The horizontal distribution of organisms along transects
  • The vertical layering of habitats based on plant growth (correct)
  • The measurement of biodiversity in ecosystems

    • In ecology, what is the main purpose of conducting sampling in ecosystems?

    <p>To predict future changes and prevent human impacts on ecosystems</p> Signup and view all the answers

    Which sampling method involves the use of measured squares to analyze biodiversity in an ecosystem?

    <p>Quadrats</p> Signup and view all the answers

    What does a transect sampling method involve?

    <p>Observing and recording species diversity along a straight line</p> Signup and view all the answers

    What is the main purpose of using the Lincoln Index in ecology?

    <p>To estimate the population size of a species based on initial and subsequent captures</p> Signup and view all the answers

    In the context of ecological studies, what does 'M' represent in the Lincoln Index formula N = M × n/m?

    <p>Number of individuals caught/marked/released initially</p> Signup and view all the answers

    Why is it important to conduct multiple independent and repeated trials when using the Lincoln Index?

    <p>To increase the precision of population estimates</p> Signup and view all the answers

    What method is commonly used to study zonation and stratification in ecosystems?

    <p>Transects</p> Signup and view all the answers

    Which factor would most likely affect the accuracy of population estimates using the Lincoln Index?

    <p>Marking individuals in a harmful way</p> Signup and view all the answers

    How does exponential growth relate to changes in population numbers over time?

    <p>It creates a 'J' shape on a graph indicating increasing population numbers over time</p> Signup and view all the answers

    What is the purpose of stratified sampling according to QCAA's guidelines?

    <p>Estimating population, density, and distribution</p> Signup and view all the answers

    Which factor is crucial in selecting a site for ecological surveying according to QCAA?

    <p>Representativeness of the community as a whole</p> Signup and view all the answers

    What role does the choice of ecological surveying technique play in the stratified sampling process?

    <p>Determining the accuracy of the population estimate</p> Signup and view all the answers

    How can bias be minimized when using quadrats in ecological sampling?

    <p>Excluding organisms touching the outside of the quadrat</p> Signup and view all the answers

    What is a key step in presenting and analyzing data collected through stratified sampling?

    <p>Calculating standard deviation and standard error</p> Signup and view all the answers

    In stratified sampling process, what is essential to ensure site representativeness and future studies according to QCAA?

    <p>Accurately marking out and recording site locations</p> Signup and view all the answers

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