1. Distinguish among diffusion, osmosis, active transport, plasmolysis, and imbibition.
2. Why do living plants need a great deal of water for their activities?
3. Explain how a tall tree gets water to its tips without the aid of mechanical pumps.
5. Explain the pressure-flow hypothesis.
6. What are macronutrients? List them.
7. When nutrients are deficient in the soil, how are the deficiencies manifested in plants?
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