Transpiration
Easybiology
Which factor most immediately reduces transpiration rate on a leaf surface?
Select the correct option:
Solution
Incorrect! Answer:
High humidity
- Transpiration Mechanism: Water moves out of the leaf because the water potential inside the leaf is higher than in the outside air.
- Effect of Humidity: High humidity means the air is already saturated with water vapor.
- Vapor Pressure Gradient: High external humidity decreases the diffusion gradient (difference in concentration) between the leaf interior and the atmosphere.
- Result: This slows down the rate of evaporation and diffusion through the stomata, thus reducing transpiration.
- Others: Temperature, wind, and light generally increase the rate of transpiration.
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About This Question
- Subject
- biology
- Chapter
- plant physiology
- Topic
- transpiration
- Difficulty
- Easy
- Year
- 2025
This easy difficulty biology question is from the chapter plant physiology, covering the topic of transpiration. It appeared in the 2025 exam. Practice this and similar questions to strengthen your understanding of plant physiology concepts.
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