How Light Affects The Rate Of Photosynthesis

We can see through the results that there isn’t a normal proportional relationship between the wavelength of the light and the rate of photosynthesis and instead it starts relatively high then decreases and increases again. The colour red gives the highest rate of photosynthesis (89 bubbles per minute) with blue giving the second highest rate of photosynthesis (70 bubbles per minute), and yellow giving the third highest rate of photosynthesis (64 bubbles per minute) and green with by far the least (44 bubbles per minute). Although, we can see no direct correlation between the rate of photosynthesis and the wavelength of the light used, we can see a relationship between the colour of the leaf, the rate of photosynthesis and the colour of light used. With colours that are similar to the colour of the leaf such as green and yellow, lower rates of photosynthesis were identified while colours that were opposite to the colour of the leaf gave the highest rate of photosynthesis such as red. All of the results compared to the control showed a lower rate of photosynthesis as white light is made up of a mixture of all wavelengths of light, including wavelengths that cause a very high rate of photosynthesis.
As the process of photosynthesis requires light in the beginning of the process, also known as the light dependent reactions, we can assume that more light absorbed would cause a greater rate of photosynthesis as long as all other limiting factors are in excess such as carbon dioxide concentration, concentration of chlorophyll and