A-LevelBiologyBiodiversity and conservationOct/Nov 2015Paper 1 Q401 Mark
Anaerobic bacteria are found in large numbers in waterlogged soils. Which effect does this have on soil fertility and why?
Adecreased bacteria convert nitrate to ammonia
Bdecreased bacteria convert nitrate to nitrogen gas
Cincreased bacteria cause decomposition
Dincreased bacteria cause nitrogen fixation
✓ 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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