plumiStudying a habitat: quadrats and transects: Edexcel International A Level Biology questions
Edexcel International A Level Biology past-paper questions on 5.3.3 Studying a habitat: quadrats and transects, 2019–2025, with mark schemes and examiner’s reports where available.
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Q2(b)(i)
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All 10 questions on Studying a habitat: quadrats and transects, as a list
- June 2025, Unit 6, Q2(b)(i) (2 marks): Describe a method to select at random the five sample sites. (2)
- January 2025, Unit 6, Q2(a) (4 marks): Describe a sampling method that could be used to collect valid data to investigate this observation. (4)
- June 2023, Unit 6, Q2(c)(i) (3 marks): An odds ratio can be used to determine if the presence of mimosa trees has an effect on the presence of the cactus plants. Calculate an odds ratio using the fol
- June 2023, Unit 6, Q2(c)(ii) (1 mark): The table shows how the odds ratio can be used in this investigation. Odds ratio Presence of mimosa trees Reduces the likelihood of cactus plants being present
- January 2023, Unit 6, Q4(a) (3 marks): Describe preliminary practical work that you might undertake to find a suitable method for observing these grasshoppers to provide quantitative results. (3)
- January 2023, Unit 6, Q4(b) (8 marks): Devise a detailed method, including how you would control and monitor important variables. (8)
- January 2023, Unit 6, Q4(d) (3 marks): Suggest three limitations of your proposed method. (3)
- January 2022, Unit 6, Q3(e) (2 marks): Explain why it may not be reasonable to draw valid conclusions from the results of this investigation. (2)
- October 2021, Unit 6, Q3(d) (3 marks): Describe three improvements that could be made to this investigation. (3)
- October 2021, Unit 6, Q3(e)(ii) (3 marks): Describe how this factor could be measured to produce valid comparisons in this investigation. (3)
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