Results
Table 1. The initial and final mass of group four’s magnolia when exposed to various environmental
conditions.
Condition
Initial Mass
Final Mass
Percent Difference /
Percent Remaining
Light
Wind
Water
Control
Note that the wind had the highest percent difference while the water the lowest percent difference.
The data suggests that the wind caused the most transpiration to occur while the water caused the least
amount of transpiration to occur.
Table 2. The percent difference/percent remaining of the class average when exposing magnolia to
various environmental conditions compared to group four’s average.
Condition
Group 4’s Percent
Difference/Remaining
Class Avg. Percent
Difference/Remaining
Light
Wind
Water
Control
Note that there are differences in the light condition and wind conditions when comparing group 4’s
average to the class average. However, the wind and control averages were similar to one another.
Plant Mass of Magnolia in Measuring
the Rate of Transpiration
200
150
Light
Mass (g) 100
Wind
50
Water
0
Initial
Mass
Day 1
Day 2
Day 3
Day 4
Day 5
Control
Time
Figure 1. The plant mass of magnolia over five days when measuring the rate of transpiration in various
environmental conditions. While water lost the least amount of mass, wind lost the most amount of
mass.
Percent difference (or percent mass remaining) was calculated to determine which condition caused the
least and most transpiration to occur in magnolia. Percent difference was calculated using the following
equation: 100% – (Final/Initial x 100%). Based on Table 1, the wind condition caused the most
transpiration to occur with ____% remaining/lost. This was clearly evident as the wind condition lost
the most mass over the five day period from an initial mass of _____ to a final mass of ______
(Figure 1; Table 1). The water condition caused the least amount of transpiration to occur with ____%
remaining/lost. This was clearly evident as the water condition lost the least mass over the five day
period from an initial mass of _____ to a final mass of ______ (Figure 1; Table 1).
When comparing the group’s average to the class average, there were differences in the light and wind
conditions (provide numbers here; Table 2). However, the wind and control averages were similar to
one another (provide numbers here; Table 2). While large differences denote variation and error,
similar numbers denote precision that reduces variation and error and indicates reliable data collection.