Rates of Photosynthesis in Elodea Exposed to Various Colors of Light



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Actual Pipet Readings (mL)
In Light In Dark
Food
Coloring		 Wavelength
Least Abs.		 Elodea? 0 min 20 min 0 min 20 min
None
No
None
Yes
Red Yes
Blue Yes
Green Yes
Yellow Yes
Dark
No
Dark
Yes
Do Calculations
Milliliters of O2 Evolved
Color/Treatment Light mL
per min		 Dark mL
per min		 Light
– Dark		 – Env.
Factors		 % of
White
None/None
None/Elodea
Red/Elodea
Blue/Elodea
Green/Elodea
Yellow/Elodea
Dark
Dark/Elodea

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