Campbell Biology Plus Masteringbiology
10th Edition
ISBN: 9780321775849
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Chapter 39, Problem 5TYU
Level 2: Application/Analysis
5. The signaling molecule for flowering might be released earlier than usual in a long-day plant exposed to flashes of
- (A) Far-red light during the night.
- (B) red light during the night.
- (C) red light followed by far-red light during the night.
- (D) far-red light during the day.
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A) Describe the three steps (Reception, Transduction, Response) of de-etiolation (greening response) signal transduction in plants.
B) Describe a signal transduction (give the stimulus and response) that may occur in humans.
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Chapter 39 Solutions
Campbell Biology Plus Masteringbiology
Ch. 39.1 - What are the morphological differences between...Ch. 39.1 - Cycloheximide is a drug that inhibits protein...Ch. 39.1 - Prob. 3CCCh. 39.2 - Prob. 1CCCh. 39.2 - WHAT IF? If a plant has the double mutation err...Ch. 39.2 - Prob. 3CCCh. 39.3 - If an enzyme in field-grown soybean leaves is most...Ch. 39.3 - WHAT IF? If a plant flowers in a controlled...Ch. 39.3 - MAKE CONNECTIONS Plants detect the quality of...Ch. 39.4 - Prob. 1CC
Ch. 39.4 - Prob. 2CCCh. 39.4 - Prob. 3CCCh. 39.5 - What are some drawbacks of spraying fields with...Ch. 39.5 - Chewing insects mechanically damage plants and...Ch. 39.5 - Many fungal pathogens get food by causing plant...Ch. 39.5 - WHAT IF? Suppose a scientist finds that a...Ch. 39 - What are two common ways by which signal...Ch. 39 - Is there any truth to the old adage, "One bad...Ch. 39 - Why did plant physiologists propose the existence...Ch. 39 - Plants that have acclimated to drought stress are...Ch. 39 - Prob. 39.5CRCh. 39 - Prob. 1TYUCh. 39 - Prob. 2TYUCh. 39 - Prob. 3TYUCh. 39 - How may a plant respond to severe heat stress? (A)...Ch. 39 - Level 2: Application/Analysis 5. The signaling...Ch. 39 - If a long-day plant has a critical night length of...Ch. 39 - Prob. 7TYUCh. 39 - DRAW IT Indicate the response to each condition by...Ch. 39 - Level 3: Synthesis/Evaluation 9. EVOLUTION...Ch. 39 - SCIENTIFIC INQUIRY A plant biologist observed a...Ch. 39 - SCIENCE. TECHNOLOGY, AND SOCIETY Describe how our...Ch. 39 - Prob. 12TYUCh. 39 - Prob. 13TYU
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- In a comparison of the water potential and turgor pressure of leaf cells before and after wilting, which of the following would you expect to find? Select one: a. Water potential: wilted = not wilted; Turgor Pressure: wilted < not wilted b. Water potential: wilted > not wilted; Turgor Pressure: wilted < not wilted c. Water potential: wilted < not wilted; Turgor Pressure: wilted > not wilted d. Water potential: wilted < not wilted; Turgor Pressure: wilted < not wilted e. Water potential: wilted > not wilted; Turgor Pressure: wilted > not wiltedarrow_forwardB. Match the hormones that are supposed to be added to a plant in order to achieve the following results: a. Auxin b. Gibberellin c. Cytokinin d. Abscisic Acid e. Ethylene 19. unpollinated flowers are treated with this hormone so ovary enlarges and becomes a seedless fruit 20. substitute for temperature or light cues in plant seeds to get them to germinate 21. black spots on banana skin are spots where these are produced inducing ripening 22. seeds/bulbs stay dormant during winter to ensure survival of the plant when it germinates 23. most grape growers spray this in vines to increase length of branches between fruit clusters for more air spaces among fruits to lower fungal infections 24. sprayed on cut leaves and stems so they will remain green longer while unsprayed leaves will turn yellow and diearrow_forwardB. Match the hormones that are supposed to be added to a plant in order to achieve the following results: a. Auxin b. Gibberellin c. Cytokinin d. Abscisic Acid e. Ethylene 19. unpollinated flowers are treated with this hormone so ovary enlarges and becomes a seedless fruit 20. substitute for temperature or light cues in plant seeds to get them to germinate 21. black spots on banana skin are spots where these are produced inducing ripening 22. seeds/bulbs stay dormant during winter to ensure survival of the plant when it germinates 23. most grape growers spray this in vines to increase length of branches between fruit clusters for more air spaces among fruits to lower fungal infections 24 spraved on cut leaves and stems so they will remain green longer while unsprayed leaves will tum yellow and diearrow_forward
- (a) Describe the role of mitosis in the growth of a plant. (b) Explain why there are more cells observed in mitosis in the root tip than in the woody stem.arrow_forwardDescribe the roles played by stomata and guard cells. What would happen to a plant if these cells did not function correctly?arrow_forward3. How do plants protect themselves from pathogens? I. They have specialized cells and antibodies that search and destroy pathogens. II. They have cell-surface receptors that recognize pathogens and elicit defense responses. III. They have impenetrable physical barriers such as bark and waxy cuticles. IV. They are capable of localized response characterized by self-destruction of plant cells around the site of infection. * I, III, and IV I, II, and IV I, II, III, and IV II, III, and IV No answerarrow_forward
- 8.What is the difference between circadian rhythms and photoperiodism?arrow_forwardCan you clearly type the answers to the all the parts to this question please a) What is the role of the LEAFY gene in floral development? (b) What is the phenotype of the leafy mutant? (c) Most of the ABC program genes are directly regulated by the transcription factor LEAFY (LFY). Still, LFY is expressed broadly throughout the floral meristem when the discrete A, B, and C domains are established. Discuss how this single broadly expressed transcription factor can generate distinct domains of ABC gene expression. Feel free to use diagrams.arrow_forwardWhich of the following are the correct order of steps needed for guard cells to respond to ligth? Select one: O a. Light hits guard cells, guard cells actively pump potassium and chloride out, water follows the ions out(lower water potential), guard cells lose water and open O b. Light hits guard cells, guard cells actively pump potassium and chloride out, water follows the ions out(lower water potential), guard cells lose water and close O c. Light hits guard cells, guard cells actively pump protons out, protons escort chloride ions in, water follows the ions (lower water potential), guard cells become turgid and open O d. Light hits guard cells, guard cells actively pump protons in, water follows the protons (lower water potential and concentration gradient), guard cells become turgid and closearrow_forward
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Plant Reproduction in Angiosperms; Author: Amoeba Sisters;https://www.youtube.com/watch?v=HLYPm2idSTE;License: Standard YouTube License, CC-BY