Transpiration Lab Report Rubric
Name: _________________________
DUE: April 11, 2015
Presentation
Background
Information
Procedure
Data Presentation
Analysis
Errors
Conclusion
Expectation
Neat: if handwritten, MUST BE LEGIBLE
WITHOUT STRAINING/DECIPHERING
Organized logically
Headings for sections
Citations: MLA style
Ties together the following:
Transpiration’s role in the water cycle
How a plant moves water
Properties of water that make this happen
Discussion of stomata and their relevance
to water loss
Summarize what you did – including
scientific name of the plant we used.
Correct identification of independent and
dependent variables.
Present predictions about what would
happen.
Raw Data and Calculated Data must be
presented NEATLY in an organized,
labeled data table
Graph 1: your group’s daily water loss –
neatly labeled, all on one graph,
appropriately done (line or bar?!)
Graph 2: your total percent loss vs class
total percent loss per environment
(include error bars!)
Description of data: patterns/trends. How
did your data compare to the class
averages?
How do the environments compare to
one another? Use STDVs for comparison
purposes!
Discuss at least 2 sources of error and
how they would alter the lab. Propose
methods to better control them!
Thoroughly address the conclusion
questions in complete sentences,
paragraph form. 
Point Value
Your Points
10
25
15
20
40
10
30
Conclusion Questions:
Which environmental variable(s) resulted in the greatest rate of water loss through transpiration? Explain why this
factor might increase water loss when compared to other factors. Did the data support or reject your hypothesis?
The original lab procedure asked you to come up with a way to calculate the leaf surface area and then use that to
estimate the whole plant’s leaf surface area. Do you think this procedural element would have made the results any
more accurate? Explain.
Discuss 2 physiological or structural adaptations plants can use to minimize water loss. Make sure to address
SPECIFICALLY how it reduces transpiration.