A-LevelBiologyBiodiversity and conservationMay/June 2025Paper 4 Q87 Marks
The Boelen's python, Simalia boeleni, is a non-venomous snake found only on the island of Papua New Guinea. Fig. 8.1 shows a Boelen's python. [Figure 8.1] The International Union for Conservation of Nature (IUCN) has not assessed the conservation status of S. boeleni because the python is very hard to detect and locate. S. boeleni is listed in one of the appendices of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES).
📋 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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