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Testing Your Knowledge
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1. What is the difference between a macronutrient and a micronutrient?
2. How do plants obtain carbon and nitrogen?
3. How do the cells of xylem and phloem differ?
4. Describe how cavitation harms a plant.
5. Distinguish between cohesion and adhesion.
6. At which points in the transport of water and nutrients in plants do the following processes occur?
  • a. osmosis

  • b. active transport

  • c. cotransport

7. Describe the paths of water an dissolved minerals into xylem in a root.
8. How does xylem flow influence phloem flow?
9. Distinguish between a source and a sink.
10. What are the applications of phytoremediation and rhizosecretion?

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