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Chapter 39Plant Responses to Intern
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Fig. 39-1
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• A potato left growing in darkne
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• A potato’s response to light
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Reception• Internal and external
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Fig. 39-4-1Reception1 2Transduction
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Fig. 39-4-3CellwallReception1 2Ligh
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Transcriptional Regulation• Speci
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De-Etiolation (“Greening”) Prot
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The Discovery of Plant Hormones•
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Fig. 39-5RESULTSControlLightShadeds
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Fig. 39-5bRESULTSDarwin and Darwin:
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Fig. 39-5cRESULTSBoysen-Jensen: pho
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Fig. 39-6RESULTSExcised tip placedo
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Table 39-1
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Fig. 39-7RESULTSCell 1100 µmCell 2
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Fig. 39-8Cross-linkingpolysaccharid
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Auxins as Herbicides• An overdose
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Cytokinins• Cytokinins are so nam
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Control of Apical Dominance• Cyto
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Anti-Aging Effects• Cytokinins re
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Stem Elongation• Gibberellins sti
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Fig. 39-10(b) Gibberellin-induced f
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Fig. 39-111 Gibberellins (GA)send s
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Abscisic Acid• Abscisic acid (ABA
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Fig. 39-12Early germinationin red m
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Ethylene• Plants produce ethylene
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Fig. 39-130.00 0.10 0.20 0.40 0.80E
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Fig. 39-14ein mutantctr mutant(a) e
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Leaf Abscission• A change in the
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- Page 67 and 68: Fig. 39-16bLightTime = 0 minTime =
- Page 69 and 70: Blue-Light Photoreceptors• Variou
- Page 71 and 72: Phytochromes and Seed Germination
- Page 73 and 74: • Red light increased germination
- Page 75 and 76: Fig. 39-UN1Red lightP rP frFar-red
- Page 77 and 78: Fig. 39-19SynthesisP rRed lightP fr
- Page 79 and 80: Biological Clocks and Circadian Rhy
- Page 81 and 82: • Circadian rhythms are cycles th
- Page 83 and 84: Photoperiodism and Responses to Sea
- Page 85 and 86: Critical Night Length• In the 194
- Page 87 and 88: Fig. 39-2124 hours(a) Short-day (lo
- Page 89 and 90: Fig. 39-2224 hoursRRFRRFRRRFRRFRCri
- Page 91 and 92: A Flowering Hormone?• The floweri
- Page 93 and 94: Meristem Transition and Flowering
- Page 95 and 96: Gravity• Response to gravity is k
- Page 97 and 98: Fig. 39-24Statoliths20 µm(a) Root
- Page 99 and 100: Mechanical Stimuli• The term thig
- Page 101 and 102: • Thigmotropism is growth in resp
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- Page 105 and 106: Environmental Stresses• Environme
- Page 107 and 108: Flooding• Enzymatic destruction o
- Page 109 and 110: Salt Stress• Salt can lower the w
- Page 111: Cold Stress• Cold temperatures de
- Page 115 and 116: • Plants damaged by insects can r
- Page 117 and 118: • A virulent pathogen is one that
- Page 119 and 120: The Hypersensitive Response• The
- Page 121 and 122: Systemic Acquired Resistance• Sys
- Page 123 and 124: Fig. 39-UN3Photoreversible states o
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