LIMITATIONs+&+IMPROVEMENTS

//**Use the template to suggest improvements....**//


 * Problem with procedure ||  Effect on results  ||  Improvement  ||
 * Time of acclimatization for the plant was too short || It caused anomalies as the Elodea was not fully acclimatized to the light intensity || Extend time of acclimatisation to 3-4 minutes ||
 * Temperature of the water was not regulated during the different light intensities. || Measurements are no longer results of the independent variable (light intensity) - inaccurate results || Place the beaker in a water bath and set it to an optimum temperature (e.g. 30 degrees Celsius) for at least 15 minutes prior to the experiment, to ensure a stable water temperature inside the beaker. ||
 * The infrared heat from the bulb was a primary source of heat during the experiment, and it changed with the distance of the lamp from the beaker. Therefore when the distance increased, not only would the light intensity decrease but the infrared heat would also have decreased. The water would then cool down and cause slower photosynthesis. || Measurements are no longer results of the independent variable (light intensity) - inaccurate results || use a long/linear, low-heat fluorescent light tube – placed parallel to the beaker – instead of a round, high-heat, incandescent light bulb. ||
 * The light bulb was small and round, indicating the light came from one single point. As the Elodea was spread long and thin in the beaker, it meant that the distance between the light and the Elodea parallel to the bulb was shorter from the distance between the light and the bottom/top of the Elodea; the rays of light between the bulb and the different points along the Elodea plant were not equidistant. || This creates an inaccuracy in the ruler measurements. || use a long/linear, low-heat fluorescent light tube – placed parallel to the beaker – instead of a round, high-heat, incandescent light bulb. ||
 * The elodea was not fresh, it had been left out for some time before the experiment. || The rate of photosynthesis rate was slow, and it could have been the cause of the anomaly. || Store it in water in the fridge and remove it just before the experiment. ||