Rate of Photosynthesis in Pond-Weed Plan The aim of this activity is to investigate one of the factors that affect the rate of photosynthesis in pond-weed. Video demo - Photosynthesis and respiration with Cabomba pondweed - Duration: 5:15. Effect of Light Intensity on the rate of Photosynthesis. Class practical In this experiment the rate of photosynthesis is measured by counting the number of bubbles rising from the cut end of a piece of Elodea or Cabomba. Measuring the rate of photosynthesis Without photosynthesis life as we know it would. Read a full protocol on how to investigate photosynthesis using pondweed. Experiment to Show the Rate of Photosynthesis Aim: Experiment to show the rate of photosynthesis when pondweed is under different life intensities. Photosynthesis In Action. such as Canadian pondweed. The method of how to measure the rate of photosynthesis is included with the experiment. Learn how plants make food using photosynthesis and how leaves adapt to do this with BBC Bitesize KS3 Science. In the presence of light pondweed undergoes photosynthesis and a gas is produced as one of the products. How may the rate of photosynthesis be increased? ? Pondweed experiment for photosynthesis. Investigating the rate of photosynthesis. This is an example of a common experiment used to investigate light intensity and. Demonstrating oxygen evolution during photosynthesis using Cabomba pondweed. the rate of bubbling can serve as an indication of the rate of photosynthesis.