2.1 The graph below shows the rate of photosynthesis under different environmental conditions. Study the graphs and answer the questions that follow. Rate of photosynthesis A CO₂ 30°C 0,1% B CO₂ 20 °C 0,1% Light intensity (lux) CO: 20 °C (and 30 °C) 0,04% 2.1.1 Which of the graphs shows the highest production of glucose? 2.1.2 Why is the production of glucose in graph A, low? 3 (1) 2.1.3 What factor in graph B and C limits the rate of photosynthesis? (1) 2.1.4 Predict what the graphs would look like if the temperature were increased first to 40 °C and then to 60 °C. 2.1.5 Give a reason for your answer in QUESTION 2.1.4. (1)
