Transport In Plants

Campbell Chapter 32

1. Give a brief overview of transport in plants showing the movement of water, minerals, O₂, and CO₂.

2. Explain how cotransport and chemiosmosis contribute to transport in plants.

3. How does this chemiosmosis differ from the chemiosmosis found in photopsynthesis and respiration?

4. What is water potential?

5. How does the addition of solutes affect water potential?

6. What effect does pressure have on water potential?

7. What is turgor pressure?

8. Name and describe the three routes for lateral transport of solutes and water in plant tissue.

9. What are plasmodesmata?

10. What role is played by the endodermis and Casparian strip in the uptake of water and nutrients by the root?

11. Root pressure, transpiration pull, adhesion, and cohesion all contribute to the upward movement of water in the xylem. Describe the role of each.

12. Explain what is meant by the transpiration-photosynthesis compromise.

13. Describe the physiology behind the opening and closing of stomata?

14. Name the environmental factors which have an effect on stomata control.

15. What is translocation?

16. What is meant by the terms source and sink?

17. Describe the pressure flow (i.e., bulk flow) hypothesis.