Classification, Biodiversity and Conservation

Worked examples (5)

• 1The three-domain system (5 marks)
• 2Binomial nomenclature using a named example (4 marks)
• 3Archaea vs Bacteria (4 marks)
• 4Why molecular evidence is more reliable than morphology (5 marks)
• 5Why viruses are not classified in any kingdom (3 marks)

Model answers (5)

• ✓Model answer — 9700/42 May/Jun 2024 Q5(a) (adapted)
• ✓Model answer — 9700/22 May/Jun 2024 Q3 (adapted)
• ✓Model answer — 9700/42 Oct/Nov 2024 Q5(b) (adapted)
• ✓Model answer — 9700/42 May/Jun 2024 Q5(c) (adapted)
• ✓Model answer — Practice question — recurrent Paper 2/4 style

Worked examples (5)

• 1Calculating Simpson's diversity index (6 marks)
• 2Mark-release-recapture (Lincoln index) — calculation and assumptions (6 marks)
• 3Genetic, species and ecosystem diversity (4 marks)
• 4Random vs systematic sampling (5 marks)
• 5Why biodiversity is important (4 marks)

Model answers (5)

• ✓Model answer — 9700/42 May/Jun 2024 Q6 (adapted)
• ✓Model answer — 9700/42 Oct/Nov 2024 Q6 (adapted)
• ✓Model answer — 9700/42 May/Jun 2024 Q6(c) (adapted)
• ✓Model answer — 9700/42 Oct/Nov 2024 Q6(c) (adapted)
• ✓Model answer — Practice question — recurrent Paper 4 style

Worked examples (5)

• 1Three reasons to conserve biodiversity (6 marks)
• 2In-situ vs ex-situ conservation (6 marks)
• 3Role of CITES in conservation (4 marks)
• 4Why ex-situ cannot replace in-situ conservation (5 marks)
• 5Why some conservation programmes succeed and others fail (5 marks)

Model answers (5)

• ✓Model answer — 9700/42 May/Jun 2024 Q7 (adapted)
• ✓Model answer — 9700/42 Oct/Nov 2024 Q7 (adapted)
• ✓Model answer — 9700/22 May/Jun 2024 Q4 (adapted)
• ✓Model answer — 9700/42 May/Jun 2024 Q7(b) (adapted)
• ✓Model answer — Practice question — recurrent Paper 4 style