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What factors might affect the rate of production of oxygen by plant?
Member rating: No Rating | Words: | Submitted: Thu Jul 11 2002
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What factors might affect the rate of production of oxygen by plant? Variables Light Heat Water Carbon Dioxide Time Spent Counting Size of Boiling Tube Distance of Lamp Amount of Water Choose one variable that you are going to investigate. Light Intensity is to be the Variable Explored in this Investigation. Think about how you can change this variable. Escalating or Reducing the distance from the light source to the plant can vary the light intensity. What would you do to other variables? Equipment Pond Weed Lamp Stop Clock Meter Ruler Plan A piece of pondweed will be cut and placed into a beaker containing water and sodium hydrogen carbonate. A lamp will be shined on to the pondweed and the amount of foam released from the plant will be counted. The lamp will be adjusted to different distance from the plant to try and obtain different results. Results Distance of Lamp from Apparatus Number of Gas Bubbles/ Minute Group A Group B Group C Group D Average Lamp Off 0 0 0 0 0 100 cm 0 2 11 0 3 50 cm 19 39 26 10 24 30 cm 41 60 53 42 42 10 cm 59 Over 100 79 60 Over 75 ?? ?? ?? ?? Sadeck Amin 01/05/07 ...
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