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Question
Tissue culture techniques are used toa. produce hundreds of identical plants.
b. propagate promising mutant plants.
c. improve food crops.
d. increase production of commercially important hybrid plants.
e. do all of these.
Answer
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d. stores fat
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Circadian
Choose the one most appropriate answer for each. Some letters may not be used.
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b. promotes cell elongation in stems
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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.
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c. uses membrane pumps to move hydrogen ions out of the cytoplasm into the primary cell wall.
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e. does all of these.
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Auxin concentration gradients
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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.
e. nitric 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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A pollen grain coat is composed of which of the following?
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b. cellulose
c. peptidoglycan
d. exopolysaccharides
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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.