The bicarbonate serves as the carbon source . For photosynthesis to occur, plants need CO2cap C cap O sub 2
Here are the standard comparisons usually performed in this lab and the scientific explanations for the results.
As the leaf disks undergo photosynthesis, they produce oxygen as a byproduct. The oxygen gets trapped in the air spaces within the leaf, causing the disk to become buoyant and float to the surface. The time it takes for the disks to float is inversely related to the rate of photosynthesis. floating leaf disk photosynthesis lab answers
If your lab results seemed "wrong" or inconsistent, check these common errors:
If your lab results aren't matching the expected outcomes, check these three common issues: The bicarbonate serves as the carbon source
A beaker of disks in plain water (no bicarbonate) or a beaker kept in total darkness.
| Disk # | Time to Float (min) | | --- | --- | | 1 | 2.5 | | 2 | 3.1 | | 3 | 2.8 | | ... | ... | | 10 | 3.5 | The oxygen gets trapped in the air spaces
If the lamp is too close, it may "cook" the enzymes in the leaf tissue, denaturing them and stopping photosynthesis entirely. Conclusion
If you didn't pull a strong enough vacuum with the syringe, air remains in the leaves and they won't stay submerged at the start.
Here’s why this is a good feature to include in your answers, along with how to use it effectively.
These findings support my hypothesis that higher amounts of sodium bicarbonate positively impact the amount of floating leaf chads... CliffsNotes Studying Photosynthesis and Respiration in Hedera helix The floating leaf disk assay (FLDA) utilizes the rate at which oxygen is produced or consumed as a measure of the processes of pho... Association for Biology Laboratory Education (ABLE) Study Photosynthesis with the Floating Leaf Disk Assay | Lesson Plan Oct 16, 2020 —