O-LevelBiologyCell Biology5090/11 · May/June 2022 · Q11 Mark

The diagram shows a plant cell. The cell is stained with iodine solution. [Figure 1.1] After staining with iodine solution, what are the colours of the cell wall and the starch grain?

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Ablue-black, blue-black

Bblue-black, orange-brown

Corange-brown, blue-black

Dorange-brown, orange-brown

✓ Correct answer

C: orange-brown, blue-black

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Topic: Cell Biology, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2022 Paper 1 Variant 1, question 1.

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