1. What do you think the experimenters considered as two possible sources for the substances (matter) that became incorporated into new tree growth? (This experiment was performed nearly 300 years ago. People didn't know very much about chemistry, and air was thought to be a non-substance.) QUESTION 2. When the experimenters measured the weight of the two substances (question #1) given to the plant, they found 35 kg of one and 2 kg of the other. Where do you think they thought the rest of the plant's weight came from?

1. How do you determine that an element is essential for plant? 2. How does an ion move from an external solution into xylem in plant roots?

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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.

(h) DO NOT COPY HERE ON GOOGLE AND BARTLEBY Questions: Is there a significant of compound leaves relative to strong winds? How about leaf-eating animals? Justify your answer.

The important data to be recorded in this experiment will come from the observations of the increase in

Question 4, POST (slide 32): The production of urine in the human kidney is different from transport in vascular plants. However, if you had to choose... which of these two processes is the production of urine in the kidney moresimilar to? A. The movement of water and mineral solutes via xylem. B. The movement of water and sugar via phloem. Justify your answer.

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…

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What will happen to urine production if ADH is higher or lower than normal?