Biology 9700 · 13 Photosynthesis
13.2 Investigation of limiting factors
Investigate and explain how light intensity, carbon dioxide concentration, and temperature act as limiting factors on photosynthesis rate.
- Questions
- 73
- Years
- 2002–2026
- Multiple choice
- 2
- Written answer
- 71
- Average marks
- 12.2
Where this subtopic appears
- Paper 4variants 04, 41, 42, 43, 4453
- Paper 5variants 05, 51, 52, 53, 5417
- Paper 1variants 01, 112
- Paper 3variants 331
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | 1 | 5 | – | 6 |
| 2023 | – | 2 | 3 | 5 |
| 2022 | 2 | 3 | – | 5 |
| 2021 | 1 | 3 | 2 | 6 |
| 2020 | 1 | – | 2 | 3 |
| 2019 | 1 | 3 | 2 | 6 |
| 2018 | – | 4 | 4 | 8 |
| 2017 | 1 | 2 | 3 | 6 |
| 2016 | 1 | 3 | 2 | 6 |
| 2015 | – | – | 4 | 4 |
| 2010 | – | 3 | 3 | 6 |
| 2009 | – | – | 3 | 3 |
| 2008 | – | 1 | – | 1 |
| 2007 | – | – | 2 | 2 |
| 2006 | – | 1 | – | 1 |
| 2004 | – | – | 1 | 1 |
| 2003 | – | 1 | 1 | 2 |
| 2002 | – | 1 | 1 | 2 |
