BI-723
Factors affecting transpiration
Biology · Secondary 3 · Hard · Factors affecting transpiration
In an investigation, a student measures the rate of transpiration of a plant using a potometer at two different wind speeds. At low wind speed, the bubble moves 30 mm in 5 minutes. At higher wind speed, the bubble moves 60 mm in 5 minutes. How does wind speed affect the rate of transpiration in this experiment?
- Transpiration rate decreases from 12 to 6 mm min⁻¹.
- Transpiration rate is unchanged at 6 mm min⁻¹.
- Transpiration rate increases from 6 to 12 mm min⁻¹.
- Transpiration stops completely at higher wind speed.
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