A-LevelBiologyCell structureMay/June 2017Paper 3 Q222 Marks
K1 is a slide of a stained transverse section through a plant root. You are not expected to be familiar with this specimen. You are required to: • use the eyepiece graticule to measure across the root • use these measurements to calculate the length of the cortex as a percentage of the diameter of the root • draw a plan diagram of half of the root.
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