Excellent candidates will use the ‘BlackStone Tutors Six Point Approach for Data Analysis’
- Data Title (if present)
- ‘x’ axis and ‘y’ axis
- Graphical/tabular progression shown
- Physiological correlation (How can this pattern be explained biologically?)
- Anomalies/additional information of note
- Critical analysis of data/data source
The graph depicts the effect of light on the rate of photosynthesis. The x-axis denotes the intensity of the light, and the y-axis denotes the rate of photosynthesis, measured by the release of oxygen bubbles. The graph clearly describes that light intensity is not the only limiting factor for photosynthesis. Light intensity determines the initial rate of photosynthesis. Thereafter, the rate of photosynthesis is proportional to the light intensity. Further increases in the light intensity beyond 12 units result in no further increase in the rate of photosynthesis. The process of photosynthesis involves a combination of carbon dioxide, water and light in order to form glucose and oxygen. Thus, Oxygen bubbles are a useful indicator of the rate of photosynthesis. The flattening of the graph at a light intensity of 12 units is likely to suggest that there are other rate limiting factors, likely to be limited carbon dioxide or less likely water. There are no notable graphical anomalies. It would be beneficial to have a numerical axis as well as units for rate of photosynthesis, in order to better analyse the data.