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The E ects of Light & Carbon Dioxide on Photosynthesis
This virtual lab investigation will help you determine how carbon dioxide concentration and
light intensity can affect the process of photosynthesis.
Elodea plants were prepared and placed in beakers of water, containing different amounts of
carbon dioxide (CO ). Lamps with different light intensities were shone on the beakers. Bubbles
2
of oxygen were produced by the plants. Count the bubbles in each beaker that were produced
over a set period of time.
State your hypothesis: ______________________________________________________________
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5,000 lux
5,000 lux
300 ppm 600 ppm 1200 ppm
600 ppm
1200 ppm
300 ppm
15,000 lux
15,000 lux
300 ppm 600 ppm 1200 ppm
600 ppm
300 ppm
1200 ppm
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25,000 lux
25,000 lux
300 ppm 600 ppm 1200 ppm
1200 ppm
300 ppm
600 ppm
