Investigating the effect of light intensity on photosynthesis rate (Edexcel GCSE Biology Combined Science): Flashcards
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Photosynthesis process
Photosynthesis process
Plants use light energy to convert CO₂ + H₂O into glucose + O₂
Aquatic plants used in photosynthesis experiment
Aquatic plants used in photosynthesis experiment
Cabomba or Canadian pondweed
Volume & conc. of sodium hydrogen carbonate soln used
Volume & conc. of sodium hydrogen carbonate soln used
45 cm³ of 1% solution
Purpose of sodium hydrogen carbonate solution
Purpose of sodium hydrogen carbonate solution
Provides CO₂ for photosynthesis
Length of Cabomba pondweed to cut
Length of Cabomba pondweed to cut
8 cm
Initial distance of pondweed from light source
Initial distance of pondweed from light source
10 cm
Acclimation time before measuring bubbles
Acclimation time before measuring bubbles
Five minutes
Number of times to repeat bubble count
Number of times to repeat bubble count
Five times
Independent variable in light intensity experiment
Independent variable in light intensity experiment
Distance from light source
Dependent variable in photosynthesis rate experiment
Dependent variable in photosynthesis rate experiment
Number of bubbles produced per minute