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 (C)</p> Signup and view all the answers

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

<p>Quadrats (A)</p> Signup and view all the answers

What does a transect sampling method involve?

<p>Observing and recording species diversity along a straight line (C)</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 (D)</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 (D)</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 (A)</p> Signup and view all the answers

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

<p>Transects (A)</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 (B)</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 (D)</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 (C)</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 (A)</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 (A)</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 (A)</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 (C)</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 (A)</p> Signup and view all the answers

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