82 notecards = 21 pages (4 cards per page)
1) All of the following are plant adaptations to life on land except
2) The ancestors of land plants were aquatic algae. Which of the
following is not an evolutionary adaptation to life on land?
3) Most angiosperms have alternate phyllotaxy. What allows each leaf
to get the maximum exposure to light and reduces shading of lower
4) A plant developed a mineral deficiency after being treated with a
fungicide. What is the most probable cause of the deficiency?
5) If you were to prune the shoot tips of a plant, what would be the
effect on the plant and the leaf area index?
6) Which structure or compartment is not part of the plant's
7) Which of the following would be least likely to affect osmosis in
8) Active transport involves all of the following except the
9) Active transport of various materials in plants at the cellular
level requires all of the following except
10) Which of the following is not a function of the plasma membrane
11) Given that early land plants most likely share a common ancestor
with green algae, the earliest land plants were most likely
12) The movement of water across biological membranes can best be
13) An open beaker of pure water has a water potential (Ψ) of
14) All of the following have an effect on water potential (Ψ) in
15) If ΨP = 0.3 MPa and ΨS = -0.45 MPa, the resulting Ψ is
16) The value for Ψ in root tissue was found to be -0.15 MPa. If you
take the root tissue and place it in a 0.1 M solution of sucrose (Ψ =
-0.23 MPa), the net water flow would
17) Compared to a cell with few aquaporins in its membrane, a cell
containing many aquaporins will
18) Some botanists argue that the entire plant should be considered
as a single unit rather than a composite of many individual cells.
Which of the following cellular structures cannot be used to support
19) Which of the following statements is false about bulk flow?
20) Which of the following would likely not contribute to the surface
area available for water absorption from the soil by a plant root
21) Root hairs are most important to a plant because they
22) A water molecule could move all the way through a plant from soil
to root to leaf to air and pass through a living cell only once. This
living cell would be a part of which structure?
23) All of the following involve active transport across membranes
24) Which of the following statements about xylem is incorrect?
25) What is the role of proton pumps in root hair cells?
26) In plant roots, the Casparian strip is correctly described by
which of the following?
27) Which of the following is not an important component of the
long-distance transport process in plants?
28) Pine seedlings grown in sterile potting soil grow much slower
than seedlings grown in soil from the area where the seeds were
collected. This is most likely because
29) The following factors may sometimes play a role in the movement
of sap through xylem. Which one depends on the direct expenditure of
ATP by the plant?
30) One is most likely to see guttation in small plants when the
31) One would expect to find the highest density of aquaporins in
which of the following?
32) If isolated plant cells with a water potential averaging -0.5 MPa
are placed into a solution with a water potential of -0.3 MPa, which
of the following would be the most likely outcome?
33) What drives the flow of water through the xylem?
34) What is the main force by which most of the water within xylem
vessels moves toward the top of a tree?
35) In which plant cell or tissue would the pressure component of
water potential most often be negative?
36) Water potential is generally most negative in which of the
following parts of a plant?
37) Which of the following has the lowest (most negative) water
38) Which of the following is responsible for the cohesion of water
39) Transpiration in plants requires all of the following except
40) Which of the following statements about transport in plants is
41) Active transport would be least important in the normal
functioning of which of the following plant tissue types?
42) Which of the following statements is false concerning the xylem?
43) Xylem vessels, found in angiosperms, have a much greater internal
diameter than tracheids, the only xylem-conducting cells found in
gymnosperms. The tallest living trees, redwoods, are gymnosperms.
Which of the following is an advantage of tracheids over vessels for
long-distance transport to great heights?
44) Water rises in plants primarily by cohesion-tension. Which of the
following is not true about the cohesion-tension model?
45) Assume that a particular chemical interferes with the
establishment and maintenance of proton gradients across the membranes
of plant cells. All of the following processes would be directly
affected by this chemical except
46) Which cells in a root form a protective barrier to the vascular
system where all materials must move through the symplast?
47) Guard cells do which of the following?
48) All of the following normally enter the plant through the roots
49) Photosynthesis begins to decline when leaves wilt because
50) The water lost during transpiration is a side effect of the
plant's exchange of gases. However, the plant derives some benefit
from this water loss in the form of
51) Ignoring all other factors, what kind of day would result in the
fastest delivery of water and minerals to the leaves of a tree?
52) If the guard cells and surrounding epidermal cells in a plant are
deficient in potassium ions, all of the following would occur except
53) The opening of stomata is thought to involve
54) Which of the following experimental procedures would most likely
reduce transpiration while allowing the normal growth of a
55) Guard cells are the only cells in the epidermis that contain
chloroplasts and can undergo photosynthesis. This is important because
56) All of the following are adaptations that help reduce water loss
from a plant except
57) Which of the following best explains why very few CAM plants are
58) As a biologist, it is your job to look for plants that have
evolved structures with a selective advantage in dry, hot conditions.
Which of the following adaptations would be least likely to meet your
59) A primary result for stomatal closure on a hot, dry day would be
60) What is the driving force for the movement of solutes in the
phloem of plants?
61) Phloem transport of sucrose is often described as going from
source to sink. Which of the following would not normally function as
62) Which of the following is a correct statement about sugar
movement in phloem?
63) Phloem transport is described as being from source to sink. Which
of the following would most accurately complete this statement about
phloem transport as applied to most plants in the late spring?
64) Arrange the following five events in an order that explains the
mass flow of materials in the phloem.
65) Water flows into the source end of a sieve tube because
66) Which one of the following statements about transport of
nutrients in phloem is false?
67) According to the pressure flow hypothesis of phloem transport,
68) Plants do not have a circulatory system like that of some
animals. If a water molecule did "circulate" (that is, go
from one point in a plant to another and back in the same day), it
would require the activity of
69) Long-distance electrical signaling in the phloem has been shown
to elicit a change in all of the following except
70) Plasmodesmata can change in number, and when dilated can provide
a passageway for
The following photo shows a strawberry leaf displaying guttation.
Answer the following question regarding guttation.
72) A fellow student brought in a leaf to be examined. The leaf was
dark green, thin, had stoma on the lower surface only, and had a total
surface area of 10 square meters. Where is the most likely environment
where this leaf was growing?
73) Several tomato plants are growing in a small garden plot. If soil
water potential were to drop significantly on a hot summer afternoon,
which of the following would most likely occur?
74) The symplast transports all of the following except
75) Which of the following is an adaptation that enhances the uptake
of water and minerals by roots?
76) Which structure or compartment is part of the symplast?
77) Movement of phloem sap from a source to a sink
78) Photosynthesis ceases when leaves wilt, mainly because
79) What would enhance water uptake by a plant cell?
80) A plant cell with a ΨS of -0.65 MPa maintains a constant volume
when bathed in a solution that has a ΨS of -0.30 MPa and is in an open
container. The cell has a
81) Compared with a cell with few aquaporins in its membrane, a cell
containing many aquaporins will
82) Which of the following would tend to increase transpiration?