Explain why the Elodea (plant) cells did not lyse when placed in tap water as did the animal cells (red blood cells). In other words, what is the reason that there is a difference between animal and plant cell's response to being placed in these various solutions?
2. Placing the wilted Elodea cells (or wilted lettuce leaves that you might put into a salad) into tap water causes the plant cells to become turgid once again. Explain, in terms of osmosis, why the Elodea leaf (or lettuce leaf) becomes "crisper" after placing it in tap water.
3. Notice that a plant cell, unlike an animal cell, has not only a plasma (cell) membrane but also has a cell wall encasing it. Did the cell wall appear to swell, shrink, or remain the same during your observations?