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Eyepiece Graticule Describe Student Determine Diameter Stomata Marks

Front Describe how the student could use an eyepiece graticule to determine the mean diameter of stomata. [3 marks]
Back 1. Measure (each stoma) using eyepiece
graticule;
2. Calibrate eyepiece graticule against stage
micrometer / ruler / graph paper;
3. Take a number of measurements (to calculate
a mean);

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