Photosynthesis

Photosynthesis

1. Carbon dioxide + Water > Glucose + Oxygen

2. What can affect the rate of photosynthesis?

   • Ligtht intensity
     • Light intensity can affect the rate of photosynthesis, when the light intesity increases then so does the rate of photosynthesis. This can be tested by placing a light source a set distance from a plant (e.g. Pond weed) and measure the amount of bubbles produced in a minute and repeat this with the light source further away and measure the bubbles again and the results should show a decrease in the bubbles produced.
   • Carbon dioxide concerntration
     • Sometimes photosynthesis is limited by the concentration of carbon dioxide in the air. Even if there is plenty of light, a plant cannot photosynthesise if there is insufficient carbon dioxide.
   • Temperature
     • If the temperature is too cold then photsynthesis will occure at a much slower rate however if the temperature gets too hot then plants may not be able tho photosynthesise at all

3. Artificially creating the ideal conditions

   • A greenhouse is the ost common way to create the ideal enviroment for plants to grow. A greenhouse helps trap in the sun's heat, this is extremly benificial as heat tends to be the biggest effecting factor the rate of photosynthesis.
   • Many farmers often supply the plants with artificial light on a night time to give the plants extra time to photosynthesise
   • More often then not, people use paraffin heaters to produce more carbon dioxide so then casrbon dioxide doesnt affect the rate of photosynthesis as when paraffin is burnt it releases carbon dioxide

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