Demonstrating oxygen evolution during photosynthesis using Cabomba pondweed. When placed closer to a light source, the rate of bubbling will speed up. Investigating the Effect of Light Intensity on Photosynthesis in a Pondweed Aim: To investigate how the rate of photosynthesis changes at different 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. Experiment On How The Light Intensity Affects The Rate Of Photosynthesis In A Pondweed Essays and Research Papers Gives practice for long 6 mark questions in the new specification in starter activity. Includes activity using elodea pondweed and student worksheet Learn how plants make food using photosynthesis and how leaves adapt to do this with BBC Bitesize KS3 Science. In this practical experiment, the rate of photosynthesis is measured by counting the number of bubbles rising from the cut end of a piece of Cabomba pondweed. How may the rate of photosynthesis be increased? ?. A student investigated the effect of temperature on the rate of photosynthesis in pondweed. Measuring the rate of photosynthesis. To do this, place Cabomba pondweed in an upside down syringe in a water bath connected to a capillary tube. Experiment to Show the Rate of Photosynthesis Aim: Experiment to show the rate of photosynthesis when pondweed is under different life intensities.