The Rate of Photosynthesis Flashcards
What 3 things is the rate of photosynthesis affected by?
The intensity of light, the volume of CO2 and the temperature
What do plants also need for photosynthesis?
Water
What are factors which affect the rate of photosynthesis called?
Limiting factors
What does ‘limiting factor’ mean?
It is a factor stopping photosynthesis from happening any faster
How would lack of light affect the rate of photosynthesis?
Light provides energy for the process
How does temperature affect the rate of photosynthesis?
If it is cold them enzymes will not work effectively
What type of conditions would volume of CO2 be a limiting factor?
In enclosed spaces e.g. a greenhouse
What can you do to work out the ideal conditions for photosynthesis
An experiment
What is a typical experiment to work out ideal conditions for photosynthesis?
Canadian pondweed experiment by measuring the amount of oxygen produced in a given time to work out how fast photosynthesis is happening
What factor has to be just right for photosynthesis?
Temperature
What happens if the temperature is too low?
The enzymes needed for photosynthesis will work very slowly (or not at all)
What happens if the temperature is too high?
The enzymes will become denatured and damaged
What is the independent variable in an experiment?
The thing being tested e.g. concentration of CO2
What is the dependent variable?
The one you measure e.g. volume of oxygen produced
How can you artificially create the right environment for photosynthesis?
In a greenhouse
