Rate of Transpiration
Biology: Edexcel IGCSE, topic 3.3.6
Factors Affecting the Rate of Transpiration
Transpiration transports water and the minerals dissolved in it through the plant. There are many factors that affect the rate of transpiration:
Temperature
- Increased temperature makes water evaporate faster, which increases the rate of transpiration.
Humidity
- Increased humidity increases the amount of water in the air. This makes it more difficult for more water to evaporate.
- Increasing humidity decreases the rate of transpiration.
Light intensity
- Increased light intensity makes water evaporate faster, which increases the rate of transpiration.
Air flow
- Increased air flow carries water away from the plant's leaves, encouraging more water to evaporate.
- Increased air flow increases the rate of transpiration.