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Demonstrating the production of oxygen during photosynthesis

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Introduction

Wednesday, November 29th, 2006 Demonstrating the production of oxygen during photosynthesis Aim: An experiment to show the investigation into the relationship between the rate of photosynthesis and the intensity of light. Hypothesis: The rate of photosynthesis will increase along with the intensity of light. Variables: Fixed: volume of water, amount of pondweed, size of beaker/test tube/funnel, temperature Manipulated: light intensity Responding: amount of oxygen released in a certain amount ...read more.

Middle

2. Fill beaker with 250 ml water. 3. Take temperature of water and record. 4. Place Canadian pondweed in funnel (with leaves facing base of funnel) and attach support to the base of the funnel. 5. Place funnel inside beaker. 6. Fill test tube to the brim with water. 7. ...read more.

Conclusion

Place beaker one metre away from the lamp. Measure the distance to make sure. 10. Place apparatus in light. 11. Any oxygen released by the plant should rise to the bottom of the test tube. 12. Leave experiment for roughly 30 minutes. 13. Check amount of oxygen collected and record results. 14. Move experiment 10 centimetres closer to the light source and repeat steps 1 to 13. Record results. ...read more.

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