Limiting factors on photosynthesis (Edexcel GCSE Biology): Flashcards

Condition restricting rate when in short supply

Light intensity, CO₂ concentration, temperature

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

Falls to $\frac{1}{4}$ (quarter) 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

Lower - photosynthesis exceeds respiration at lower light

Faster growth, higher yields, increased profits