9700 Paper 3 asks for low-power plan diagrams of tissues and high-power drawings of cells, both marked on strict conventions. Practise spotting errors, placing label lines that touch the right tissue, choosing the best drawing, and calculating magnification with micrometres.
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Outlines of the tissue areas only, in the correct proportions, with no individual cells drawn.
A few adjacent cells drawn accurately, with plant cell walls shown as two lines.
Single, clear, continuous lines with no shading and no gaps.
Ruled lines touching the tissue or structure, not crossing, with labels outside the drawing.
Drawing size ÷ actual size, converting millimetres to micrometres (× 1000) first.
The marking follows the conventions in published Cambridge mark schemes. The experiments, readings and wording on this page are our own.