1. Why do some water insects able to walk on water? Explain. 2. Explain how adhesion and cohesion help plants move materials. 3. What property is responsible when water get to the leaves in the top of the tallest trees against the force of gravity? Explain.

What is the name of the region where water and dissolved minerals move within cell walls (but not through the plasma membranes) and in the spaces between cells as it travels through the root cortex? ectomycorrhizae a. b. mesophyll арoplast C. d. symplast

Which of the following would tend to DECREASE uptake of water by a plant root hair? Increasing the of the root hair Adding de-salinated water to the soil • Increasing concentrations of solutes in the root hair None of these would decrease uptake of water by a plant root hair

1. Estimate the maximum turgor pressures (Ψp) inside the cells of leaves and flowers.   2. Which structure (leaves or flowers) have stiffer, more rigid cell walls? What part(s) of the graphs tell you this?   3. At about what relative cell volume (equal to relative water content) does incipient plasmolysis occur for each structure?   4. Which structure (leaves or flowers) has more solutes inside the cells?   5. Which structure (leaves or flowers) do you expect to undergo more shrinking and swelling in volume with changes in water content?   6. Imagine you wanted to display a C. speciosa shoot in a vase in your house. You cut a flowering shoot (a shoot with both leaves and flowers on it) from a tree growing outside. You then transport the shoot into your house. As you carry it, the leaves and flowers are evaporating water. By the time you place the shoot in the vase of water, the relative water content (equivalent to relative cell volume) of the leaves and flowers has declined to…