The Rate Of Photosynthesis Flashcards
What are the limiting factors of photosynthesis?
Low temperatures
Shortage of carbon dioxide
Shortage of light
What factors affect photosynthesis?
Temperature
Light intensity
Availability of carbon dioxide
Availability of water
What is a limiting factor?
Something that reduces the rate of photosynthesis
If there is not enough light, what will it do to the rate of photosynthesis?
Slow it down
If there is not enough carbon dioxide, what will it do to the rate of photosynthesis?
Slow it down
How do you control the amount of light a plant would get during an experiment in a laboratory setting?
Move a lamp closer to and further away from the plant.
How would you control the amount of carbon dioxide a plant would get during an experiment in a laboratory setting?
By dissolving different amounts of sodium hydrogen-carbonate in the water which gives off carbon dioxide.
What is the best way to control the temperature during an experiment in a laboratory setting?
By using a water bath
At what temperature does it become to hot for photosynthesis to take place?
At about 45 degrees
What happens if a plant gets too hot during photosynthesis?
The enzymes it needs will get damaged.
In a greenhouse how do farmers make sure temperature isn’t a limiting factor?
Greenhouses trap in the suns heat. In winter, a heater might be used and in summer, shades and ventilation may be used to make sure it doesn’t get too hot
In a greenhouse how do farmers make sure light isn’t a limiting factor?
Artificial light can be used at night so that there is more time for photosynthesis to take place.
In a greenhouse how do farmers make sure carbon dioxide isn’t a limiting factor?
By using a paraffin heater. Not only does it heat up the greenhouse, it produces carbon dioxide as a by-product which is useful in this case.
