Case study·Routine exam skill (2/5)·No calculator
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Question
In a school garden, students observe grass, aphids, ladybirds, sparrows, soil, air, water and fungal growth on fallen leaves.
Total: 5 marks
(a) Identify two biotic components. (1 mark)
(b) Identify two abiotic components. (1 mark)
(c) Which observed component is evidence of decomposition? (1 mark)
(d) Write one food chain possible in this garden. (2 marks)
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