GCSE Biology – Quadrats and transects

Last updated: 22/06/2020
AQA GCSE Science – Combined science foundation Ecology GCSE Biology – Quadrats and transects

Learning Objectives

-I can describe how to use a quadrat
-I can describe how to use a transect
-I can describe how to determine the abundance and distribution of species in an ecosystem

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  1. Current
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  3. Answered

  1. What is a quadrat?

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  2. How big are quadrats?

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  3. Why can we not analyse all of a 10 m x 10 m area?

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  4. What do we do with a quadrat?

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  5. How do we select random areas to analyse with a quadrat?

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  6. To use random quadrat sampling, how do we set up an area?

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  7. What do we count with each random quadrat?

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  8. If we do not take enough quadrats in an area, what will the data be?

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  9. Why does the sample size of quadrats need to be fairly large?

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  10. What can we do with our average quadrat reading?

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  11. What other physical factors can we measure in each quadrat?

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  12. What are transects?

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  13. What can transects be used to measure?

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  14. What type of sampling is using transects?

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  15. How long should a transect be?

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  16. Are transects random?

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  17. What do we place at each mark along the transect?

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  18. What else can we measure along our transect?

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  19. What is the point of looking at quadrats along the transect?

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  20. What can we analyse from quadrats along a transect?

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  21. How do we mark off a transect?

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  22. What other physical factors can we measure along the transect?

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  23. Name another way of finding abundance of plants.

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  24. What might happen to plant abundance along a transect leaving the shade?

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  25. What might happen to plant abundance along a transect entering some shade?

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