Floating Leaf Disk: Photosynthesis Lab Answers

“As light intensity increased, the ET50 decreased. Under 1000 lux, ET50 was 14 minutes; under 5000 lux, ET50 dropped to 5 minutes. This shows that higher light intensity increases the rate of photosynthesis, as oxygen production (causing disks to float) occurred more rapidly.”

The Floating Leaf Disk Photosynthesis Lab demonstrates the process of photosynthesis and allows students to measure the rate of photosynthesis under different conditions. The lab helps students understand:

Usually, the disks in the water-only control will not float . Even with light, the plant lacks the CO2cap C cap O sub 2

If the lamp is too close, it may "cook" the enzymes in the leaf tissue, denaturing them and stopping photosynthesis entirely. Conclusion