Photosynthesis Science Fair Project Abstract – Super Science Fair Projects

Photosynthesis Science Fair Project Abstract - Super Science Fair Projects
How do various light intensities affect the rate of photosynthesis?

Christine
Grade 11
Malaysia

Plants carry out photosynthesis to provide oxygen and I think that this process is a very important part of the quality of life on Earth. I observed that plants could carry out photosynthesis in artificial and natural light and I wanted to see which was more effective. I conducted this project to test the rate of photosynthesis in bright sunlight and artificial yellow light. This project can enable me to take a closer look at this unique process carried out by plants.

Hypothesis
My hypothesis is the rate of photosynthesis is higher in bright light than in artificial yellow light and it does not occur in the dark.

Procedure
The procedure taken was punching the leaf discs, creating an infiltration solution from baking soda, water and liquid soap, inserting the infiltration solution into leaf discs, carrying out tests in various light and recording and tabulating data. Leaves float in water due to oxygen in the leaves. The leaves sank because the gases were pulled out of the leaf through the infiltration solution. The time taken for all 10 leaves to float was recorded as the rate of photosynthesis. From the results, a conclusion was drawn.

My observation was the rate of respiration was fastest in bright light. It took a total of 12 minutes for all leaves to float in bright light and a total of 20 minutes for all leaf discs to float in artificial light. Photosynthesis did not occur in the dark.

Conclusion
My conclusion was that the rate of photosynthesis is higher in bright light than artificial yellow light and it does not occur in the dark. My hypothesis was accepted. In the future, I hope to carry out investigations to examine factors that determine the rate of photosynthesis and increase the efficiency of photosynthesis.

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