Determining the Rate of Photosynthesis

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beckles
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Determining the Rate of Photosynthesis

Post by beckles » Tue Dec 06, 2005 1:06 am

Hey Everybody!

So, i have this lab to do...

I'm supposed to investigate two factors that affect the rate of photosynthesis in an Elodea plant.

I've decided to investigate carbon dioxide concentration, and light intensity, however, i'm unsure how to do that.. any suggestions?

PS: elodea is an aquatic plant, and therefore must typically be submerged in water.

Thanks a bunch!
-becky

Terry K.
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Post by Terry K. » Tue Dec 06, 2005 1:57 am

Well, you could take a look at if higher concentrations of light/CO2 affect the rate of growth/reproduction. Another thing you could look at is where they are located, and if you can't find any information on their locations on Earth, you should present a hypothesis on the basis of where there is high light intensity and high CO2 concentrations. That should get you an easy A if you can explain yourself well enough. Good luck, hope I helped.
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mith
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Post by mith » Tue Dec 06, 2005 4:09 am

we did that lab too, basically you use a light bulb and how close you hold the bulb would be the intensity. You can measure photosynthetic output by capturing the bubbles generated in say a 30minute period of shining.
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