Investigating the effect of light intensity on photosynthesis rate (Edexcel GCSE Biology Combined Science): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Which plant is used to investigate the effect of light intensity on photosynthesis?
Which plant is used to investigate the effect of light intensity on photosynthesis?
Cabomba
What volume of sodium hydrogen carbonate solution is used in the boiling tube?
What volume of sodium hydrogen carbonate solution is used in the boiling tube?
45 cm³
Why is sodium hydrogen carbonate solution used in this experiment?
Why is sodium hydrogen carbonate solution used in this experiment?
Provides carbon dioxide
What length should the Cabomba pondweed be cut to?
What length should the Cabomba pondweed be cut to?
8 cm
How should the pondweed be positioned in the boiling tube?
How should the pondweed be positioned in the boiling tube?
Cut end facing upwards
What is the initial distance between the pondweed and light source?
What is the initial distance between the pondweed and light source?
10 cm
How long should the apparatus stand before measuring to allow the plant to acclimate?
How long should the apparatus stand before measuring to allow the plant to acclimate?
Five minutes
How many times should the bubble count be repeated at each distance?
How many times should the bubble count be repeated at each distance?
Five times
What is the independent variable in this experiment?
What is the independent variable in this experiment?
Distance from light source
What is the dependent variable in this experiment?
What is the dependent variable in this experiment?
Number of bubbles per minute