Tested Studies in Laboratory Teaching, 2006, Volume 27
Abstract
This investigation presents a condensation of two, 3-hour laboratory sessions. In one phase, we adopt a classic dye uptake experiment to determine the path of upward water transport in a detached shoot. Photography of stem thin sections taken with a digital video camera aided by compound and stereomicroscopes and a computer significantly enhance the presentation of observations and their interpretation. In a second phase, we determine the quantitative role of leaves in determining the rate of transpiration using a moderately priced, very sensitive and stable electronic potometer.
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