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 This activity contains 45 questions.

Question 1
1
Open Hint for Question 1 in a new window		 Mineral nutrients _____.
 
End of Question 1


Question 2
2
Open Hint for Question 2 in a new window		 A root hair is _____.
 
End of Question 2


Question 3
3
Open Hint for Question 3 in a new window		 The cytoplasmic continuum connecting neighboring cells is the _____ route of water and solute transport from root hairs to xylem.
 
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Question 4
4
Open Hint for Question 4 in a new window		 Cells whose function it is to regulate the flow of water into the vascular tissue of a plant are _____.
 
End of Question 4


Question 5
5
Open Hint for Question 5 in a new window		 The continuum of spaces between cell walls of neighboring cells is the _____ route of water and solute transport from root hairs to xylem.
 
End of Question 5


Question 6
6
Open Hint for Question 6 in a new window		 A botanist discovered a mutant plant that is unable to produce the material that forms the Casparian strip. This plant is _____.
 
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Question 7
7
Open Hint for Question 7 in a new window		 The Casparian strip is _____.
 
End of Question 7


Question 8
8
Open Hint for Question 8 in a new window		 An undergraduate student had a terrarium on her windowsill containing various houseplants. She wondered why the glass was often fogged with water droplets. The undergraduate's friend, a graduate student who had taken a biology class, tried to explain that it was because of _____.
 
End of Question 8


Question 9
9
Open Hint for Question 9 in a new window		 Root pressure is attributable to _____.
 
End of Question 9


Question 10
10
Open Hint for Question 10 in a new window		 Which of the following describes the loss of water through the stomata in a plant's leaves?
 
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Question 11
11
Open Hint for Question 11 in a new window		 The rate of transpiration is expected to be greatest on a _____ day.
 
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Question 12
12
Open Hint for Question 12 in a new window		 What is the main source of energy that moves water upward in the trunk of a tree?
 
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Question 13
13
Open Hint for Question 13 in a new window		 What keeps the force of gravity from overcoming transpirational pull?
 
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Question 14
14
Open Hint for Question 14 in a new window		 Normally when an aphid feeds by puncturing plant tissues, it does not have to suck the sap out. An inexperienced aphid, however, accidentally inserted its feeding tube in the wrong place and found the fluid in its gut being sucked out through the feeding tube. This aphid must have punctured _____.
 
End of Question 14


Question 15
15
Open Hint for Question 15 in a new window		 During winter, tree sap can sometimes freeze and "cavitation" (the formation of an air pocket) may occur. Which of the following mechanisms of sap transport would you expect to be most immediately affected by cavitation?
 
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Question 16
16
Open Hint for Question 16 in a new window		 A student is performing a chemical analysis of xylem sap. This student should not expect to find much _____.
 
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Question 17
17
Open Hint for Question 17 in a new window		 Guard cells _____.
 
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Question 18
18
Open Hint for Question 18 in a new window		 Which of the following would trigger the opening of stomata in plants living in temperate climates?
 
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Question 19
19
Open Hint for Question 19 in a new window		 Stomata open during the day in response to _____.
 
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Question 20
20
Open Hint for Question 20 in a new window		 As turgor pressure increases in guard cells, the transpiration rate would be expected to _____.
 
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Question 21
21
Open Hint for Question 21 in a new window		 What contributes directly to the turgor of guard cells?
 
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Question 22
22
Open Hint for Question 22 in a new window		 In general, stomata are _____ during the day and _____ at night.
 
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Question 23
23
Open Hint for Question 23 in a new window		 Stomata can be opened or closed by guard cells. Closing the stomata at night _____.
 
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Question 24
24
Open Hint for Question 24 in a new window		 In an apple tree that is producing sugars, sugar might flow from _____ to _____.
 
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Question 25
25
Open Hint for Question 25 in a new window		 Which aspect of solute transport in the xylem of a plant is most like that of solute transport in the phloem?
 
End of Question 25


Question 26
26
Open Hint for Question 26 in a new window		 When referring to phloem transport, the "sink" in roots is created by _____.
 
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Question 27
27
Open Hint for Question 27 in a new window		 A _____ is a sugar source.
 
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Question 28
28
Open Hint for Question 28 in a new window		 Which of the following substances does the plant obtain from the air?
 
End of Question 28


Question 29
29
Open Hint for Question 29 in a new window		 When you add "plant food" to your potted geraniums, you are actually providing the plant with _____.
 
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Question 30
30
Open Hint for Question 30 in a new window		 Terrestrial plants obtain _____ from the atmosphere.
 
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Question 31
31
Open Hint for Question 31 in a new window		 Professor Scheinman claims to have discovered a new macronutrient required for plant growth. Most of the professor's colleagues are skeptical of this claim. Why might they consider it unlikely?
 
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Question 32
32
Open Hint for Question 32 in a new window		 Soil could be deficient in any of the following nutrients. If you had to supply one of them, which would be needed in the smallest amount?
 
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Question 33
33
Open Hint for Question 33 in a new window		 If a plant's leaves are yellowing, it may be that the plant is deficient in the elements needed to make chlorophyll, which include _____.
 
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Question 34
34
Open Hint for Question 34 in a new window		 Fertilizers are usually enriched in _____.
 
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Question 35
35
Open Hint for Question 35 in a new window		 Soil can easily become deficient in _____, because these ions are negatively charged and do not stick to negatively charged soil particles.
 
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Question 36
36
Open Hint for Question 36 in a new window		 A major long-term problem that occurs when irrigation water is flooded onto a field is the _____.
 
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Question 37
37
Open Hint for Question 37 in a new window		 Organic farming means that _____.
 
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Question 38
38
Open Hint for Question 38 in a new window		 One of the major problems encountered when growing genetically modified (GM) crops is _____.
 
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Question 39
39
Open Hint for Question 39 in a new window		 The most abundant gas in our atmosphere cannot be used by plants directly in its atmospheric form and is, therefore, captured by certain bacteria that live symbiotically in their roots. What is this gas?
 
End of Question 39


Question 40
40
Open Hint for Question 40 in a new window		 Nitrogen fixation is _____.
 
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Question 41
41
Open Hint for Question 41 in a new window		 Mycorrhizae are _____.
 
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Question 42
42
Open Hint for Question 42 in a new window		 Legumes (members of the pea family) have roots with swellings called nodules that _____.
 
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Question 43
43
Open Hint for Question 43 in a new window		 The location on a root that houses nitrogen-fixing bacteria is called _____.
 
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Question 44
44
Open Hint for Question 44 in a new window		 By trapping insects, carnivorous plants obtain _____, which they need _____.
 
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Question 45
45
Open Hint for Question 45 in a new window		 The sundew plant has to digest insects because _____.
 
End of Question 45


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