Transpiration & Potometer

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About this simulation

Investigate how light, airflow, temperature and humidity affect a virtual shoot. Track a moving air bubble and compare water-uptake graphs.

What students can explore

Save a trial, increase humidity and run again. Keep the other variables unchanged. What changes?
Illustrative well-watered shoot at 10–35 °C; not species measurements. Uptake depends on stomatal opening and vapour-pressure deficit. Tube radius is 0.5 mm. A potometer measures water uptake, not transpiration directly.

Learning objectives

1Save a trial, increase humidity and run again. Keep the other variables unchanged. What changes?

Questions teachers ask

Save a trial, increase humidity and run again. Keep the other variables unchanged. What changes?

The bubble moves more slowly and the distance–time slope decreases. Uptake is a proxy for transpiration; some water supports growth and other processes.

About the model

Illustrative well-watered shoot at 10–35 °C; not species measurements. Uptake depends on stomatal opening and vapour-pressure deficit. Tube radius is 0.5 mm. A potometer measures water uptake, not transpiration directly.

Embed this simulation

Drop it into your LMS, blog, or class site — free.

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