Case study·Hard exam skill (4/5)·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
A student observes five prepared slide, Q has uneven thickening at cell corners, R has thick dead plant cells, S has spindle-shaped unstriated fibres, and T has branched striated fibres.
Total: 6 marks
(a) Identify P, Q, R, S and T. (5 marks)
(b) Give one reason for identifying T. (1 mark)
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