OPPapers.com Essay Index >> Biographies >> Effects Of Light Intensity On The Rate Of Photosynthesis
We have many free term papers and essays on Effects Of Light Intensity On The Rate Of Photosynthesis. We also have a wide variety of research papers and book reports available to you for free. You can browse our collection of term papers or use our search engine.
Effects of light intensity on the rate of photosynthesis. Aim To work out
how light intensity can affect the rate of photosynthesis. ...
... Investigation on the effects of Light Intensity on Photosynthesis. Plan I plan to
investigate how light intensity affects the rate of photosynthesis in pondweed ...
... of a chloroplast suspension against variables of wavelengths and light intensity. ...
of 450 to 750nm of light and varying ... These effects on rate were obtained by ...
... As light intensity increases so, does the reaction rate of photosynthesis, heat
withstanding, but with the effects of heat also having a factor, after reaching ...
... Research Question What are the effects of light on the ... for the peaks in the rate
of photosynthesis ... Lamp from pond weed Sodium Bicarbonate Light Intensity Test 1 ...
Submitted by ME90 on March 27, 2007
Category: Biographies
Words: 494 | Pages: 2
Views: 508
Popularity Rank: 17,894
Average Member Grade: N/A (Add a Comment / Grade this Paper)
Aim
To work out how light intensity can affect the rate of photosynthesis.
Hypothesis
I think that the further away the light source is the smaller the rate of photosynthesis is. This is because there is a further distance for the light to each the plant in order for it to photosynthesise. Although the closer the light source is, the more photosynthesis, the light source could also kill or damage the Elodea (type of pondweed) because it could become too hot and denature its cells. But because light intensity is also a limiting factor of photosynthesis, the rate of photosynthesis could go up and up and reach its maximum level. So, if it would be shown in a graph, the graph would show a line going up and up and eventually continuing as a straight line. The straight line is due to the limiting factors of light intensity (Carbon dioxide and concentration of Chlorophyll).
Glucose + Oxygen (+ light) Carbon dioxide + Water
Safety
Don't place hands on bulb- damage to skin may occur.
Variables
Independent: distance of light bulb
Dependant: Amount of oxygen bubbles, distance of bulb away from pondweed and the amount of water.
Control: amount of water
Method
Place some Elodea in a boiling tube.
Place 7cm³ of oxidised water in the boiling tube.
Place boiling tube in test tube rack.
Place the light source (bulb) 0cm away from the boiling tube and use a stop watch to time it for 1 minute.
Count how many bubbles you see appearing in the water.
Repeat experiment for other distances (10-50cm).
Conclusion
On my graph, I drew a best fit curve. The curve clearly shows that the further away the light bulb is from the Elodea, the less (average) oxygen bubbles there is and the less photosynthesis going on. This doesn't agree with my hypothesis. I was right in saying that the further away...
You must Login to view the entire paper.
If you are not a member yet, Sign Up for free!