3 Shades of Transpiration
Jason Arrezola, Kelby Miller, Sadie Wheeler, Destiny Winn
Problem
Will the color black placed in front of a light affect the transpiration of the leaf in the experiment?
Hypothesis
If a black cover is placed in front of a light then it will make the transpiration process slower.
Constant Factors
Time
Light
Water
Materials
Leaf
Water
Syringe
Light
Black Cover
Manipulated Variable Procedure
Using the black covers we will be able to determine whether the color will effect the transpiration of the leaf.
Observation
During this lab we observed that it took about three minutes for a change to be evident in the experiment. Once the initial change started to occur it became evident that the slight shade we had manipulated was affecting the transpiration that was occurring.
Data
MV: 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10
Cold Water: 3.75 - 3.5 - 3.5 - 3.5 - 3.45 - 3.45 - 3.25 - 3.15 - 3 - 3Apple Juice: 5.5 - 5.46 - 5.46 - 5.45 - 5.45 - 5.43 - 5.41 - 5.41 - 5.4 - 5.4
Ammonia: 4.8 - 4.8 - 4.8 - 4.8 - 4.8 - 4.8 - 4.8 - 4.8 - 4.8 - 4.8
Sugar: 6.2 - 6.2 - 6.2 - 6.2 - 6.2 - 6.2 - 6.2 - 6.2 - 6.2 - 6.2
Light: 1.2 - 1 - 1 - 1 - 1 - 1 - 1 - 1 - 1 - 1
Shade: 5.2 - 5.2 - 5.1 - 4.9 - 4.8 - 4.8 - 4.8 - 4.7 - 4.7 - 4.5
Control: 2.8 - 2.8 - 2.7 - 2.7 - 2.6 - 2.5 - 2.3 - 2.3 - 2.2 - 2
Area of Leaf: 678
Transpiration Rate:
Cold Water: 1.22 x 10e-4
Apple Juice: 1.40 x 10e-9
Ammonia: 0
Sugar: 0
Light: 5.3 x 10e-6
Shade: 1.13 x10 e-6
Control: 4.9 x 10e-5
Analysis
mL/mm^2/min
5.2/678^2 /10
Conclusion
By doing this experiment we were able to come to the conclusion that shade has the potential to cause a change in transpiration, but in the time given made a slight if any difference in the outcome.