Credits for this Experiment:
This laboratory exercise was inspired by an article by Brian Drayton and Prassede Calabi "Long-term plant
responses to environmental change: leaf stomata densities" that appeared in Hands On! Spring 1992. Vol. 15,
Number 1, published by TERC (Cambridge, Mass, see www.terc.edu/handson),
and by the laboratory activity "Responses by stomata on leaves to microenvironmental conditions" by Carol A. Brewer (1992) pages 67-75, in
Tested studies for laboratory teaching. Volume 13. (C. A. Goldman, Editor). Proceedings of the 13th Workshop/Conference of the Association
for Biology Laboratory Education (ABLE), 191 pages. (available at:
This submission was greatly improved by comments from anonymous reviewers, and by comments from Susan Will-Wolf and Reid Harris on the appendix on statistics.
Credits for this Volume of TIEE: Please see the Editor's Notes to TIEE Volume 1.
Credits for TIEE: see TIEE Overview.
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