Matching
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Ch.
39 Vocabulary - Plant REsponses to Internal and External Signals a. | cytokinins | g. | statolith | b. | hypersensitive response | h. | cryptochrome | c. | circadian
rhythm | i. | zeaxanthin | d. | thigmomorphogenesis | j. | gibberellins | e. | phototropism | k. | phytoalexin | f. | auxins | | | | |
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1.
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a
class of plant hormones, including indoleacetic acid, having a variety of effects, such as
phototropic response through the stimulations of cell elongation, stimulation of secondary growth,
and the development of leaf traces and fruit
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2.
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a
physiological cycle of about 24 hours, present in all eukaryotic organisms, that persists even in the
absence of external cues
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3.
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the
name given to the unidentified blue-light photoreceptor
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4.
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a
class of related plant hormones that retard aging and act in concert with auxins to stimulate cell
division, influence the pathway of differentiation, and control apical dominance
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5.
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a
class of related plant hormones that stimulate growth in the stem and leaves, trigger the germination
of seeds and breaking bud dormancy, and stimulate fruit development with auxin
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6.
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a
vigorous, localized defense response to a pathogen that is avirulent based on an R-Avr
match
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7.
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growth of a plant shoot toward or away from light
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8.
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an
antibiotic, produced by plants, that destroys microorganisms or inhibits their growth
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9.
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specialized plastids that help a plant distinguish up from down
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10.
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a
response in plants to chronic mechanical stimulation, resulting from increased ethylene production;
an example is thickening stems in response to strong winds
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11.
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the
blue-light photoreceptor involved in stomatal opening
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