Photosynthesis Flashcards
What is the equation for photosynthesis
C02 + H2O —> C6 H12 06 + O2
carbon dioxide, water, light energy is absorbed by chlorophyl, glucose, oxygen
A leaf being thin allows…
for fast gas exchange
The large surface area on a leaf allows it to…
absorb as much light as possible
What do the veins in a leaf do
These carry water to the cells
The stomata of a leaf allows…
gasses (example) carbon dioxide to move in and out of it
What are limiting factors of photosynthesis
Light intensity
Temperature
CO2 concentration
Why is Light Intensity a limiting factor of photosynthesis
Because depending on the plant they require different amounts of sunlight e.g.
With most garden vegetables they need full sun which is 6-8 hours of direct sunlight daily
Plants that grow in partial shade/sun only need 3-4 hours of direct sunlight
& Plants that thrive in shade only need 2 hours of sunlight daily
Why is Temperature a limiting factor of photosynthesis
If the temperature levels are too low or too high the rate of photosynthesis declines rapidly therefore enzymes work best at their optimum temperature which is 50-68 degrees Fahrenheit or 10-20 degrees Celsius
Why is CO2 concentration a limiting factor of photosynthesis
Carbon dioxide concentration will directly affect the rate of photosynthesis as it is used in the photosynthesis reaction. An increased amount of CO2 will increase the rate of photosynthesis to a certain limit, after which a further increase in its amount will no longer increase the rate any further. & a decreased amount of CO2 will decrease the rate of photosynthesis
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Limiting factors
The factor that limits the reaction rate
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Enzyme
A substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction.
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Concentration
The ratio of the mass or volume of a substance
