This Investigating rate of photosynthesis practical 6 guide pdf outlines the steps for conducting a photosynthesis experiment using pondweed. It details two methods: counting oxygen bubbles and measuring gas volume, to assess how light intensity affects the rate of photosynthesis.

• The guide provides a step-by-step procedure for setting up the experiment using a boiling tube, pondweed, and an LED light source.
• It explains how to measure photosynthesis rate by counting oxygen bubbles or collecting gas in a measuring cylinder.
• The experiment involves varying the distance between the light source and the pondweed to observe changes in photosynthesis rate.
• The document emphasizes the importance of repetition and calculating mean values for accurate results.
• It concludes with instructions to plot a graph, likely to visualize the relationship between light intensity and photosynthesis rate.