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WFP Plant Growth
By:
Liz Kubis
Madeline Kulp
Ben Devlin
Zach Cagni
Variables we Controlled
Amount of fertilizer Amount of light Amount of water Amount of space
Problem
Will purple food coloring in the plant’s water change the color of
the plant?
ProcedureWe experimented the
variable by putting 5 drops of purple dye into the water in16 plants and
plain water in the other16 plants.
Hypothesis
If we put our experiment plants on a watering system with purple dye and our control plants on a normal water system we will agree witch will grow more.
Seeds
This graph shows the average number of seeds of the control and experimental plants.
0
20
40
60
80
100
120
control experimental
seeds
seeds
Plant Height
This graph shows the average height of the control and experimental plant height over time.
Plant Height over time
0
5
10
15
20
25
1 2 3 4 5 6 7
Number of observations
Height of plants
control
experimental
Leaves
This graph show the average number of leaves on the experimental and control plants.
0
10
20
30
40
50
60
Experimental Control
leaves
leaves
Conclusion
We thought that if we put our experimental plants on a watering system with purple dye and our control plants on a normal watering system, then our experimental plants will stay the same, but their leaves and flowers will turn purplish. We found out that the purple food coloring made the plants grown just the same. Our data showed that the experimental plants had a total of 22 less leaves then the control plants, 11 more flowers, 57 more seeds, 14 less seed pods and the control plants were 1.4 cm taller than the experimental plants. We think that because some of our plants go hit with a folder and other plants were left off the watering system, our results may have been thrown off. In the future, we would like to put plants in water mixed with paint to see if the paint will effect the plants.