The effect of light intensity on rate of photosynthesis in pondweed: practical

12 questions

1. What are the products of photosyntheisis?
2. As the pond plant shown below photosynthesises, bubbles form around its leaves. Which gas is in the bubbles?
3. What is an independent variable?
4. What is a control variable?
5. When investigating the effects of light intensity on the rate of photosynthesis, which of the following are control variables?
6. Why is it important to control the temperature in this experiment?
7. What is an accurate measurement?
8. How can you use the equipment shown to measure the rate of photosynthesis?
9. How can you reduce the intensity of the light that the pondweed receives from the lamp?
10. What is the purpose of counting the bubbles produced by the pondweed?
11. What is the main limitation of counting bubbles to measure the rate of photosynthesis?
12. What is a logical prediction for this investigation?

License: OGL