Transpiration
Transpiration process, stomatal control, factors affecting rate, plant adaptations, measuring transpiration, and practical investigations
What you'll cover
- Transpiration definition and process
- Stomata structure and guard cells
- Guard cell mechanism: potassium ions and turgor
- Factors affecting rate: temperature, humidity, wind, light
- Transpiration stream function
- Measuring with potometer
- Xerophytic adaptations: thick cuticle, sunken stomata
- Hydrophytic adaptations for water plants
- CAM photosynthesis in desert plants
- Functions: cooling, mineral transport, turgor maintenance
Study this topic
The Hidden Power of Water Loss
Key Facts About Transpiration
The Transpiration Process
Stomata: The Control Valves
Factors Affecting Transpiration Rate
Measuring Transpiration
Plant Adaptations to Control Water Loss
Functions of Transpiration
Required Practical: Investigating Factors Affecting Transpiration
Exam Success Tips
Higher CAM Photosynthesis: The Ultimate Water-Saving Strategy
How It Works: Why Environmental Factors Change Transpiration Rate
Key Definitions
Common Misconceptions
Memory Aids
Exam Focus
Higher Guard Cell Ion Mechanism in Detail
Knowledge Organiser
Links to Other Topics
Real-World Applications
Sample Flashcards
Sample Questions
What is transpiration?
Describe the three stages of transpiration in a leaf.
20
exam-style questions
25
revision flashcards
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