Edexcel IGCSE Biology · Spec 2.20
Limiting Factors
How light intensity, carbon dioxide and temperature limit the rate of photosynthesis, and the shape of each graph.
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Limiting Factors
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Spec 2.20
What you need to know
- Explain what a limiting factor is
- Describe how light and carbon dioxide affect the rate
- Describe how temperature affects the rate
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Quick check
Answer each question before opening the answer.
Name the three limiting factors of photosynthesis.
Light intensity, carbon dioxide concentration and temperature.
What is meant by a limiting factor?
The factor in shortest supply that limits (caps) the rate of photosynthesis.
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