Exercise 3: Membranes

III. Elodea Cells1. Collect one leaf from a spring of Elodea. Add a drop of isotonic solution to a clean slide. Placethe leaf, with the top surface facing up, in the drop of isotonic solution on the slide. Add acoverslip.2. Examine each slide under the microscope. Record your results in Table 7.Table 8. Observed ResultsExtracellular EnvironmentAnimalHypotonic__________ % NaClIsotonic__________ % NaClHypertonic__________ % NaClSheep’sBloodPlant(Elodea)Figure 8. Response of plant cells to a. hypotonic and b. hypertonic extracellular environments16