1. PlantingScience Makayla, Divana, Kyle, Jane

2. Question Which kind of liquid; water, tea, salt water, and sugar water, will have the most impact on the rate of photosynthesis of Swiss Chard?

3. Materials 1.500mL beaker 2.Leaf punch 3.Stopwatch 4.Sugar 5.Salt 6.Baking soda 7.Swiss Chard Leaf 8.Syringe 9.Green Tea 10.Hot plate 11.Water

4. Procedure 1. Get a large leaf of Swiss Chard 2. Using a leaf punch, cut 5 leaf-disks out of the Swiss Chard, taking care to avoid all major veins. 3. Deposit the 5 leaf-disks into a syringe filled completely with water. 4. Squirt out water and shake the syringe, making sure to get the air bubbles out of the leaf. Once the leaf-disks sink from the top to the bottom, all the oxygen has been removed from the leaf and it is now able to be properly used in the experiment. 5. For the moment, leave the leaf disks sitting in the syringe. In the meantime, pour 500 mL of water into a 500 mL beaker. Measure out.8 oz of baking soda and stir it into the 500 mL of water so the leaf has carbon dioxide, which it needs in order to photosynthesize. 6. Once you have stirred the baking soda into the water, dump the 5 leaf-disks into the 500 mL beaker and place it on a lighted surface. 7. Once you have added the leaf-disks, take a timer and time how long it takes each leaf-disk to rise to the surface. 8.Record all 5 times and take the average, which will then give you the photosynthesis rate. 9. Repeat steps 3-8 using tea, salt water and sugar water in the place of the regular, room- temperature tap water.

5. Photosynthesis Rate

6. Data LiquidsRate of Photosynthesis Salt Water31.1 seconds per cm Sugar Water19.4 seconds per cm Water65.4 seconds per cm Green TeaN/A

7. Data (cont.) Salt WaterSugar WaterWaterGreen Tea 21495189N/A 218119357N/A 248183566N/A 309213733N/A 333216935N/A

8. Conclusion While conducting our experiment for PlantingScience, we asked the following question: Which kind of liquid; water, salt water or sugar water will have the most impact on the rate of photosynthesis of Swiss Chard? We hypothesized that if we took 5 leaf-disk cut outs and tested them equally in four different liquids (salt water, sugar water, green tea and regular water) for the rate of photosynthesis using the leaf-disk method, then the green tea will have the fastest rate of photosynthesis.

9. Conclusion (cont.) In the duration of the experiment, our hypothesis was not supported. We hypothesized that green tea would have the fastest photosynthesizing rate, but sugar water proved to be the fastest, averaging at a 19.4 seconds per cm photosynthesizing rate, followed by salt water with an average of 31.1 seconds per cm. Ironically, green tea proved to be the slowest, not showing a photosynthesis rate at all. Regular tap water came in at 3rd, with 65.4 seconds per cm as its average photosynthesizing rate.

10. Plantimus Prime Disclaimer: None of the pictures used on this PowerPoint were ours, and we give full credit to the actual photographers.