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
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 39.4, Problem 1CC
Summary Introduction
To analyze: The reason for warmness of mutants that over produces abscisic acid under normal nonstressful conditions.
Concept introduction:
Abscisic acid is the factor responsible for seed dormancy and drought tolerance. During unfavorable conditions, this acid keeps the seed in dormant stage. It suppresses the germination and induces the protein synthesis to avoid dehydration. In well grown plants, during drought the abscisic acid accumulates in leaves. It acts on guard cells and closes the stomata. This prevents water loss by transpiration.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
List five main groups of natural plant growth regulators. Write a note ondiscovery, physiological functions and agricultural/horticultural applicationsof any one of them.
Acclimatization has been one of the major obstacles to the use of tissue culture in crop improvement. Explain why this process is necessary for the ex vivo survival of tissue culture derived plants.
TRUE OR FALSE
Rice varieties with erectophile leaves are more susceptible to photorespiration compared to those with planophile leaves.
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
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- To get a salt-tolerant plant, in which stage we have to induce salt in the plant tissue culture method?arrow_forwardA crude extract sample was obtained from a plant and was found effective as an anti-diabetic agent in-vitro. The researcher wants to determine the appropriate lethal dose of the sample because it was intended to be administered orally. Literature studies show that plants under the same genus with the source of the crude extract has a lethal dose of 300 mg/Kg BW. Your group performed the test following the OECD Guideline 423 and used the recommended starting dose. The derived approximate LD50 was 25 mg/Kg BW. 1.With the approximate LD50 of the plant sample tested in the case, determine and interpret the TI of the sample if the ED50 is: A. 40 mg/Kg BW B. 18 mg/Kg BW C. 3 mg/Kg Bwarrow_forwardA crude extract sample was obtained from a plant and was found effective as an anti-diabetic agent in-vitro. The researcher wants to determine the appropriate lethal dose of the sample because it was intended to be administered orally. Literature studies show that plants under the same genus with the source of the crude extract has a lethal dose of 300 mg/Kg BW. Your group performed the test following the OECD Guideline 423 and used the recommended starting dose. The derived approximate LD50 was 25 mg/Kg BW. Why would a drug with a TI of less than 1 be considered as the primary treatment of a certain disease?arrow_forward
- Aside from corn maize, what are the possible plant sources to extract phytoglycogen? Provide as many as you can.arrow_forwardAcid rain can have a pH between 1.5 and 5.0. The effect of acid rain on the environment depends on the pH of the rain and the characteristics of the environment. It appears that acid rain has a negative effect on plants. The scale below shows the pH of normal rain. Provide the information requestec below that should be included in a research plan to test the effect of pH on the early growth of bean plants in the laboratory. Which of the following would be the dependent variable? (choose all that apply)kr Normal rain 12 3 45 6 7 89 10111213 14 pH Scale a. the pH of the rain b. the type of plant c. the amount of rain d. the height of the plant Se Which statement best describes the growth curve seen below: a. It shows only exponential growth b. It shows a decline in population c. It shows growth slowing and then remaining steady d. It shows extinctionarrow_forwardExplain the function of BAP in the preparation of plant tissue culture media.arrow_forward
- The leaf explants cultured on a culture medium turned black and caused the medium turned to brown colour after 5 days of culture. Explain this phenomenon and suggest two ways to overcome this problemarrow_forwardDiscuss other morphological differences between sunny and shady set-ups of mung bean in relation to phototropic response of plants. Characteristics sunny shaded Leaf color Lime Green Pale Green Direction of Growth Grows upward towards the direction of sunlight Oriented in the direction of the light but growth is bent downwardarrow_forwardTannins and silica are growth-enhancing compounds in plants associated with “antixenosis”. True or Falsearrow_forward
- Justify the use of metalaxyl to treat maize seeds and its influence on the growth and appearance of corn plants. Describe the mechanism by which metalaxyl is used to combat downy mildew.arrow_forwardTo test the technique's efficacy, leaf and stem explants were sterilised using a surface sterilisation protocol. Before being treated with 50 percent Clorox for 20 minutes, all explants were properly cleansed with distilled water. After that, the explants were washed with distilled water before being cultivated on Murashige and Skoog (MS) basal medium plates.For each type of explant, a total of five plates were created, each with ten explants. Table shows the findings obtained after a week. Discuss and draw conclusions from the findings.arrow_forwardName a functional plant which have antibacterial, anti cancer and anti diabetic activity? And also the functional plant should be out of research,there is no research took place about the functional plant in Bangladesh? Please answer at your own easy words. Please don't use AI for answering this question.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax