Limiting factors on photosynthesis (Edexcel GCSE Biology Combined Science): Flashcards

Environmental condition restricting rate when in short supply

Light intensity, CO₂ concentration, temperature

Light intensity $\propto \frac{1}{\text{distance}^2}$

Falls to $\frac{1}{4}$ of original value

Around 0.04%

Around 45°C

15°C to around 40°C

Water

Increase chlorophyll content in leaves

Where photosynthesis rate equals respiration rate