Campbell Biology (11th Edition)
11th Edition
ISBN: 9780134093413
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 39, Problem 1TYU
Summary Introduction
Introduction: Plants undergo many stresses like stress due to drought, flood, freezing cold, heat, and salt. In order to survive in those extreme conditions plants have different adaptation methods.
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The hormone that helps plants respond to drought is (A) auxin. (B) abscisic acid. (C) cytokinin. (D) ethylene.
Phenolics, spines, terpenes, cutins, defense related proteins and suberin are some examples of
plant defense. Plants are evolving to put up a fight against plant pathogen invasion.
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Plant cells communicate in a variety of ways to elicit cellular responses. In the figure below the plant is responding the presence of light with the release of auxin. Auxin was first discovered for its ability to promote growth in plants. It is a plant hormone that inhibits the lengthening and stimulate the formation of lateral roots and root hairs.
(b) Explain the role that auxin has in eliciting the plant’s response.
Chapter 39 Solutions
Campbell Biology (11th Edition)
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 - MAKE CONNECTIONS What type of feedback process is...Ch. 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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- A tobacco plant has successfully fended off plant pathogen via hypersensitive response (HR). (i) What would you be able to observe on the plant and explain the processes that happened at cellular level? What are the benefits for the tobacco plant that has developed systemic acquired resistance (SAR) in comparison to HR? (ii) (ii) Name the chemical compounds responsible in triggering SAR and how would this signal be transmitted?arrow_forwardWhich of the following statements about age gradients within the plant body is FALSE?arrow_forward1. Skunk cabbage has evolved stinky flowers because (a) the smell prevents other plants from growing nearby all year long. (b) all yellow flowers smell bad. (c) the odor attracts pollinators. (d) the odor repels pollinators. 2. Which of the following is not a characteristic of most plants? (a) carries out photosynthesis (b) has cell walls made of cellulose (c) has yellow flowers (d) has specialized reproductive organs 3. Much of the oxygen in the earth's atmosphere (a) is produced as a waste product of cellular respiration in plants. (b) is released as a byproduct of photosynthesis. (c) is produced as a waste product of cellular respiration in animals. (d) is produced by tree frogs. 4. The mature sporophyte of a fern (a) produces haploid spores by meiosis. (b) produces diploid spores by meiosis. (c) produces diploid spores by mitosis. (d) produces haploid spores by mitosis. 5. Fusion of male and female gametes in plants produces (a) a eudicot stamen. (b) a style. (c) a haploid spore.…arrow_forward
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