Biology A-Level
Potometry as a proxy measure
What Potometry as a proxy measure means in Biology A-Level, as defined for OCR.
Definition of Potometry as a proxy measure
Check what you remember
Read the wording for your board, then hide it and explain Potometry as a proxy measure in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
A potometer records the rate of water uptake by a shoot as a proxy for transpiration rate, with an air bubble moving along a capillary scale.
Topics that use Potometry as a proxy measure
- Use of apparatus and techniques (OCR A-Level)
Related terms
- Accuracy of observation transferred to paper
- Accurate reading of scales and menisci
- Annotation as recorded evidence
- Apparatus selection
- Calibration of the eyepiece graticule
- Clarity and convention in biological drawing
- Colorimetry and calibration
- Computer modelling
Using Potometry as a proxy measure in the exam
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