A-LevelBiologyBiodiversity and conservationMay/June 2012Paper 1 Q401 Mark

Why could only 4% of the energy from sunlight be fixed by producers during photosynthesis?

Q: What topic does this question test?

This question tests Biodiversity and conservation in A-Level Biology (syllabus code 9700). It is worth 1 mark.

Alot of energy is lost as energy passes from one trophic level to the next in food chains.

Blot of sunlight reflects off clouds, is absorbed by pond water or does not strike chloroplasts.

CSome energy passes from dead plants to decomposers such as bacteria and fungi.

DSome parts of plants are not eaten or cannot be digested by herbivores.

✓ Correct Answer

The correct answer is B: lot of sunlight reflects off clouds, is absorbed by pond water or does not strike chloroplasts.

📋 Examiner Report & Trap Analysis

Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This A-Level Biology Question

Topic

This multiple-choice question tests Biodiversity and conservation in A-Level Biology (syllabus code 9700). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Biology May/June 2012 examination, Paper 1 Variant 2.

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