International A Level Biology / Photosynthesis

Core practical 10: measuring the rate of photosynthesis revision notes

Edexcel International A Level Biology (YBI11), chapter 14: Photosynthesis, specification point 5.8. Part of the full course.

Watch the video lesson · International A Level Biology past papers

A photosynthometer measures the oxygen produced by pondweed so you can calculate its rate of photosynthesis. A fair test changes one factor at a time while controlling the others.

More lessons in Photosynthesis

• Photosynthesis: the overall reaction
• ATP: the immediate energy supply
• Chloroplast structure and function
• Absorption and action spectra
• Separating leaf pigments by chromatography
• The light-dependent reactions
• Cyclic and non-cyclic photophosphorylation
• The Calvin cycle
• What the plant makes from GALP
• Limiting factors: light, carbon dioxide, temperature and wavelength