# Describe how three factors can limit the rate of photosynthesis in a plant.

> Cambridge International IGCSE Biology (0610) — 6.1 Photosynthesis · Describe · 4 marks

## Mark scheme (4 marks)

1. Carbon dioxide concentration as a limiting factor
2. Light intensity as a limiting factor
3. Temperature as a limiting factor — effect of low or high temperature on enzymes
4. Correct use of the term 'limiting factor' — identifying it as the factor in shortest supply that restricts the overall rate

## Key terms

- [photosynthesis](https://www.gradenine.co.uk/glossary/photosynthesis)

## Related

- [Revision notes for Cambridge International IGCSE Biology (0610)](https://www.gradenine.co.uk/learn)
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Source: [GradeNine](https://www.gradenine.co.uk/q/describe-how-three-factors-can-limit-45eface2) · Published by Druglandscape Ltd.