Spinach Photosynthesis Lab Report ..

This process is also affected by the temperature surrounding the plant (the species of plant we experimented with, pond weed, photosynthesised best at around 20 degrees centigrade.) Light, temperature & CO2 are known as limiting factors, and each is as important as the next in photosynthes...

Photosynthesis In Spinach Leaves By: Rafid, ..

Watch spinach leaf disks rise and fall in a baking soda solution in response to photosynthesis. The leaf disks intake carbon dioxide from a baking soda solution and sink to the bottom of a cup of water. When exposed to light, the disks use the carbon dioxide and water to produce oxygen and glucose. Oxygen released from the leaves forms tiny bubbles that cause the leaves to float.


MEASURING PHOTOSYNTHESIS IN SPINACH LEAVES lab

The length of time it takes for leaf disks to float again is a measure of the net rate of photosynthesis.

Knowing that spinach is a plant that grows and thrives in warmer weather, my group hypothesized that the colder temperatures would slow the rate of photosynthesis, because of the slowing of molecular movements and reactants.
Procedure
Materials
Statistical tests
Literature Cited
-Baking soda (sodium bicarbonate)
-liquid soap (5ml in 250ml of water)
-2 plastic syringes without needle
-20 spinach leaves (cut using hole puncher)
-hole puncher
-2 beakers
-Timer
-Light source
-Ice pack ( for experiment 2 )


Disks Floating With CO2
Disks Floating Without CO2
1.


the various photosynthetic pigments from spinach leaves ..

Record and report findings.
For experiment 2 repeat steps 3-8 with the solutions at different temperature opposed to at different carbon dixide contents.(We did 18*C and 25*C)
Time/Min
Time/min
Disks Floating at 18* C
Disks Floating at 25* C
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Graphs 1
The final results demonstrated that in the CO2 solution, photosynthesis went on normally in the first experiment.

Photosynthesis Lab Leaf Disc Assay


The rates of photosynthesis in a bicarbonate solution will be compared to the rate in water while the rate of photosynthesis in the spinach leaves at 18 degrees Celsius will be compared to the rate at 25 degrees Celsius.
Hypothesis
1.

Paper Chromatography of a Spinach Leaf Lab - Anu & …

and, What other ways can we accurately determine the rate of photosynthesis in plant cells?
Introduction
photosynthesis Lab: Spinach Leaves in Different Solutions
Questions
- Does the presence/absence of a carbon dioxide source, such as a bicarbonate solution, affect the rate of photosynthesis?

- How does temperature affect the rate of photosynthesis?

Paper Chromatography of a Spinach Leaf Lab Measuring the ..

If you add 10 uniform sized spinach leaf disks into different bicarbonate concentrations, then the disks in the highest concentration will float faster because they'll have a higher rate of photosynthesis.