| Function | Mechanism | Benefit |
|---|---|---|
| Cooling | Evaporation removes latent heat | Prevents overheating in sunlight |
| Mineral transport | Minerals dissolved in transpiration stream | Delivers nutrients to all cells |
| Water distribution | Creates pull from roots to shoots | Supplies water for photosynthesis |
| Turgor maintenance | Continuous water flow maintains pressure | Keeps non-woody plants upright |
| Concentration of sugars | Water loss concentrates phloem sap | Aids sugar transport |
This key facts covers Functions of Transpiration within Transpiration for GCSE Biology. Transpiration process, stomatal control, factors affecting rate, plant adaptations, measuring transpiration, and practical investigations It is section 9 of 21 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Practice questions for Transpiration
What is transpiration?
Describe the three stages of transpiration in a leaf.
Quick recall flashcards
What is a potometer?
An apparatus that measures the rate of water uptake by a plant shoot. Used to estimate transpiration rate (though actually measures uptake, not loss).
What is a xerophyte?
A plant adapted to survive in dry/arid conditions with limited water availability (e.g., cacti, marram grass).