Factors Affecting Photosynthesis Flashcards
Name the 4 limiting factors for photosynthesis
1) amount of light
2 ) carbon dioxide concentration
3) amount of chlorophyll
4) temperature
How does the amount of light affect photosynthesis?
- More light = faster rate of photosynthesis
- There is an optimum rate of photosynthesis (rate will continue to increase but begin to leave out at optimum)
How does carbon dioxide concentration affect the rate of photosynthesis?
- More CO2 = faster rate of photosynthesis
- Unit optimum level is reached, rate will increase but begin to level out at optimum level
How does temperature affect the rate of photosynthesis?
- Higher temperature = higher rate of photosynthesis
- Graph is shaped like a triangle
- Rate of photosynthesis will DECREASE after around 45°c - enzymes in chlorophyll are destroyed
How does the amount of chlorophyll affect the rate of photosynthesis?
- More chlorophyll = More energy absorbed = quicker rate of photosynthesis
Do root hair cells contain chlorophyll? Why/why not?
No
Their function is to absorb nutrients and minerals from the soil, not t photosynthesise (no chloroplasts)