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Community level systems practice questions

Practise mixed syllabus-aligned questions for Community level systems. Aligned to OCR Gcse Biology A Gateway.

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A student investigates the decomposition of banana peel under different conditions. They place equal masses of banana peel into four containers: Container A: Maintained at 5°C, moist, with air access. Container B: Maintained at 25°C, dry, with air access. Container C: Maintained at 25°C, moist, with air access. Container D: Maintained at 25°C, waterlogged, with no air access. a) State the independent variable in this investigation. [1] b) State the dependent variable in this investigation. [1] c) Predict which container would likely show the fastest rate of decomposition and explain your choice based on the factors affecting decomposition. [4] d) Explain why the banana peel in Container B would decompose slowly. [2] [8 marks]

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