Transpiration MindMap
MindMap for the transpiration within plants.
- Created by: Sam Willetts
- Created on: 24-04-13 10:14
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- Transpiration
- Temperature
- An increase in temperature will increase the rate of transpiration
- Increasing the temperature will increase the kinetic energy within the plant
- Increased movement will cause a rise in evaporation
- An increase in temperature will decrease the humidity outside the plant
- Increasing the temperature will increase the kinetic energy within the plant
- An increase in temperature will increase the rate of transpiration
- Light
- An increase in light intensity will increase the temperature
- Increases the rate of transpiration
- Increasing light intensity will increase the rate of photosynthesis
- Stomata open when there is light and close when it is dark
- An increase in light intensity will increase the temperature
- Air Movement
- If the air movement is rapid then the wind will blow away the water molecules from around the stomata
- This will therefore increase the concentration gradient
- Therefore, the more air movement there is then the faster the rate of transpiration
- This will therefore increase the concentration gradient
- If the air movement is rapid then the wind will blow away the water molecules from around the stomata
- Cohesion Tension
- Water molecules are sticky meaning they stick to eachother
- As water leaves the xylem vessel the pressure in the xylem decreases
- This causes tension to increase within the xylem vessel
- This causes the water molecules to move up the xylem vessel into the leaf
- This causes tension to increase within the xylem vessel
- Water enters the xylem vessel through the roots
- Humidty
- If the air is dry then the concentration gradient will increase
- Therefore, a decrease in humidity will cause a rise in the rate of transpiration
- If the air is dry then the concentration gradient will increase
- Stomata
- Stomata are special pores located under the leaves of plants
- Water vapour diffuses through the stomata
- They are used for gas exchange
- Stomata are special pores located under the leaves of plants
- Temperature
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