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Measure and record the length of each leaf from the petiole to the tip in the table.
Next, carefully trace each leaf outline onto a blank piece of computer paper.
Then, cut out and weigh and 4 x 4 cm square of the same paper, weigh the cutout tracing, and record these data in the table.
Data Analysis and Conclusion
To calculate the leaf surface area, divide the surface area of the 4 x 4 cm paper square by the mass of the paper square, and multiply the resulting number by the mass of the leaf tracing.
Next, create a bar graph with your five plant species listed on the x-axis, and the surface area in square centimeters indicated on the y-axis.
Draw a trend line through the graph if a relationship is evident.
Using your qualitative observations and quantitative measurements, draw conclusions about the data you collected.