A-LevelBiologyBiodiversity and conservationMay/June 2012Paper 1 Q401 Mark
Why could only 4% of the energy from sunlight be fixed by producers during photosynthesis?
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. This question tests the candidate's understanding of biodiversity and conservation within the Biologysyllabus. The examiner's mark scheme requires...
📋 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...
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