Hypothesis 1: Heats speeds up the rate of photosynthesis.

Hypothesis 2: Light directly affects the rate of photosynthesis.

Discussion/Conclusion: In both hypotheses, factors effecting the rate at which photosynthesis were tested. In the first hypothesis, temperature was the factor that was being tested. From the observations and date collected from the tests performed, it is difficult to say whether temperature effects photosynthesis. There was not much change from the beginning to the end. This could be due to the fact that the testing stage was not long enough or it could have just been that temperature does not affect the rate of photosynthesis. From the gathered results, it is undeterminable whether temperature affects the rate of photosynthesis. In the second hypothesis, light was the factor that was being tested. From the data collected and the observations, it can clearly be determined that light is a factor that affects the rate of photosynthesis. With syringe that was placed under the light, the leaves rose to the top much faster than that of the control syringe and the no-light syringe. The light allowed photosynthesis to occur, creating oxygen, making the leaves rise. With the control and no-light, photosynthesis still occurred, but not as rapidly as the one in the light. From the data collected from both of the tested hypotheses, it is determined that light is a factor that affects the rate of photosynthesis, but temperature is unknown.

Some topics in this essay:
Materials Hypothesis, DCPIP DCPIP, Introduction Question, test tube, rate photosynthesis, phosphate buffer, test tubes, placed light, phenol red, affects rate photosynthesis, light factor, affects rate, distilled water, aluminum foil, leaf blades water, syringe placed light, sink bottom syringe, added test tube,