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Question
Which theory of water transport states that hydrogen bonding allows water molecules to maintain a continuous fluid column as water is pulled from roots to leaves?a. pressure flow
b. evaporation-condensation
c. cohesion-tension
d. osmotic pressure
e. bulk flow
Answer
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Related questions
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c. receives, conducts, and initiates signals in response to environmental changes
d. stores fat
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a. A
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Circadian
Choose the one most appropriate answer for each. Some letters may not be used.
a. flower each successive year or after several years of vegetative growth
b. promotes cell elongation in stems
c. has receptor sites for a particular hormonal message
d. a hollow, cylindrical organ that protects young leaves growing within it
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c. has receptor sites for a particular hormonal message
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b. gibberellin.
c. cytokinin.
d. abscisic acid.
e. ethylene.
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The polar transport of auxin in a plant
a. creates an uneven distribution of the hormone.
b. uses active membrane transporters to move auxin in and out of cells.
c. uses membrane pumps to move hydrogen ions out of the cytoplasm into the primary cell wall.
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Auxin concentration gradients
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c. allow formation of plant parts in expected patterns.
d. help young cells elongate so that shoots and roots lengthen.
e. are described by all of these EXCEPT "appear once germination begins."
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b. abscisic acid.
c. salicylic acid.
d. citric acid.
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a. produce growth hormones.
b. use aerobic respiration.
c. move when conditions around it deteriorate.
d. produce its own lipids and proteins.
e. respond to dwindling supplies of nutrients and water.
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b. cellulose
c. peptidoglycan
d. exopolysaccharides
e. none of these
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Sperm nuclei are indicated by
a. A.
b. B.
c. C.
d. D.
e. E.
Q:
Meiosis is indicated by
a. A.
b. B.
c. C.
d. D.
e. E.