Biology · May / June 2019 · Paper 11 · Question 6

The graphs show how two different conditions affect the rate of photosynthesis. [graph 1: rate of photosynthesis against increase, curve rising then plateauing] [graph 2: rate of photosynthesis against increase, curve rising then falling] Which conditions are being altered in graphs 1 and 2?

1. Agraph 1: carbon dioxide concentration; graph 2: light intensity
2. Bgraph 1: carbon dioxide concentration; graph 2: temperature
3. Cgraph 1: temperature; graph 2: carbon dioxide
4. Dgraph 1: temperature; graph 2: light intensity

As printed in the paper