Here are the results of the experiment: Figure 8.2. Root experiment post-set up (top-left), after one day (top right), and after three days (bottom).
To investigate the function of the root system, four set-ups will also be prepared. Test tubes 1-3 will be filled with water to about three-fourths full, while only about 5-10 drops of water should be added into tube 4. Three fresh plants with intact roots and rid of the soil, will be placed into test tubes 2, 3 and 4. Roots should be completely immersed in water in tubes 2 and 3 while the root of the plant in tube 4 should not be in contact with (well above) the water. This will establish the setups which are: (a.) plant-free control, (b.) plant immersed in pure distilled water, (c.) plant immersed in distilled water-food color mixture, (d.) un-immersed plant. A few drops of oil should be added in all tubes to form a lipid layer on top of the water column on each set up. The set-ups should sit undisturbed at room temperature for two days. After 2 days, the water level will be observed as well as the condition of the plants in all the test tubes.
Interpret the result obtained from each of the set-ups
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