Chapter 37 – Transport in Plants
Chapter 37
Transport in Plants
Multiple Choice Questions
1. The process by which water is “pulled” up through the xylem columns of plants as it
evaporates out of the leaves is called
2. The most important ion in controlling the movement of water into and out of the guard
cells is
Chapter 37 – Transport in Plants
3. Water is able to cross plant plasma membranes by a combination of
4. On a short-term basis, water loss in plants may be controlled by the
Chapter 37 – Transport in Plants
5. Mangrove plants live in areas regularly flooded with salt water. Which of these is not a
possible mechanism for controlling their salt balance?
6. Some plants are able to endure frequent flooding events because they contain a tissue with
loose parenchyma cells and large air spaces called
Chapter 37 – Transport in Plants
7. Even in the absence of transpiration, some water can move into the roots and partially up
the xylem columns. This phenomenon is due to
8. Which of the following statements does not apply to aquaporins?
Chapter 37 – Transport in Plants
9. Which of the following statements about transport through phloem is true?
10. Which of the following is not transported within the plant by the xylem and/or the
phloem?
Chapter 37 – Transport in Plants
11. Turgor is most directly related to the plant cells’
12. Water moves through a plant by each of the following methods except
Chapter 37 – Transport in Plants
13. The movement of oxygen through the aquatic plant may depend on
14. Most of the water that evaporates from leaves passes out through the
Chapter 37 – Transport in Plants
15. Most of the water absorbed by the plant enters through the
16. Stomatal opening requires each of the following conditions, except
Chapter 37 – Transport in Plants
17. The plasma membranes of root hair cells contain a variety of protein transport channels
through which specific ions are transported, even against large concentration gradients, by
18. A plant will usually wilt when which component of water potential reaches 0 MPa?
Chapter 37 – Transport in Plants
19. Cavitation can occur when what happens?
20. Which of the following actions occurs in many plants when CO2 concentrations are
high?
Chapter 37 – Transport in Plants
21. The Calvin Cycle can only produce sugar if ______can enter through the pores of the
leaves.
22. Plants living in standing water often face which of the following problems?
Chapter 37 – Transport in Plants
23. A plant is exposed to a toxin that blocks ABA receptor sites in the plasma membrane.
What is the likely consequence of this exposure?
Chapter 37 – Transport in Plants
Clarify Question
•
What is the key concept addressed by the question?
•
What type of thinking is required?
•
What key words does the question contain?
Gather Content
•
What do you already know about ABA? How does it relate to the question?
Consider Possibilities
•
What other information is related to the question? Which information is most useful?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 37 – Transport in Plants
24. Which of the following must occur in order to maintain a high pressure potential within
guard cells?
Chapter 37 – Transport in Plants
Clarify Question
•
What is the key concept addressed by the question?
•
What type of thinking is required?
•
What key words does the question contain?
Gather Content
•
What do you already know about how guard cells function? How does it relate to the
question?
Consider Alternatives
•
What other information is related to the question? Which information is most useful?
Choose Strategy
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 37 – Transport in Plants
25. Mechanisms that evolved in plants to regulate the rate of water loss do not include
Chapter 37 – Transport in Plants
26. The uneven distribution of an impermeable solute on either side of a membrane will
result in
27. Most carbohydrates manufactured in leaves and other photosynthetic parts are transported
through the phloem to the rest of the plant by the process of
Chapter 37 – Transport in Plants
28. Which of the following does not require expenditure of energy?
29. Which of the following hormones increases when plants are flooded?
Chapter 37 – Transport in Plants
30. Some plants can tolerate flooding conditions by
31. The process of moving water through a plant by transpiration works because water
molecules stick to each other with
Chapter 37 – Transport in Plants
32. Which of the following equations represents the total water potential of a plant?
33. Pure water without applied pressure has a water potential that is equal to