Campbell Biology in Focus (2nd Edition)
Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
bartleby

Videos

Textbook Question
Book Icon
Chapter 31, Problem 1TYU

The hormone that helps plants respond to drought is

  1. A.    auxin.
  2. B.     abscisic acid.
  3. C.     cytokinin.
  4. D.    ethylene.
Expert Solution & Answer
Check Mark
Summary Introduction

Introduction:

A drought is known as environmental stress to plants and is caused because of the scarcity of water. It significantly affects or damages the growth of plants.

Answer to Problem 1TYU

Correct answer:

The abscisic acid hormone helps the plants to respond to drought conditions. Therefore, option (B) is correct.

Explanation of Solution

Reason for the correct statement:

In the condition of drought, plants inhibit or avoid the germination of seeds and growth. Plants undergo dormancy state, in which plants exhibit a very little or no growth. In this condition, the abscisic acid (a hormone) helps the plants to respond against drought.

Option (B) is given as “abscisic acid”.

“The hormone that helps the plants to respond to drought is abscisic acid”, it is the right answer.

Hence, option (B) is correct.

Reasons for the incorrect statements:

Option (A) is given as “auxin”.

Auxins (plant hormones) are plant regulators, which promote the elongation of the stem, development of fruit, and the formation of lateral and adventitious roots. Hence, it is the wrong answer.

Option (C) is given as “cytokinin”.

Cytokinin is the regulator that helps in promoting the lateral bud growth, delaying the senescence of leaf, and stimulation of the germination of seeds. Hence, it is the wrong answer.

Option (D) is given as “ethylene”.

Ethylene is a plant hormone that is gaseous and is stimulated by auxins. It promotes the ripening of fruits and flowering. Hence, it is the wrong answer.

Hence, options (A), (C), and (D) are incorrect.

Conclusion

The hormone that helps plants to respond to drought is abscisic acid.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
Answer number seven do what it says.
Which of the following is the process that is "capable of destroying all forms of microbial life"? Question 37 options: Surgical scrub Sterilization Chemical removal Mechanical removal
After you feel comfortable with your counting method and identifying cells in the various stages of mitosis, use the four images below of whitefish blastula to count the cells in each stage until you reach 100 total cells, recording your data below in Data Table 1. (You may not need to use all four images. Stop counting when you reach 100 total cells.) After totaling the cells in each stage, calculate the percent of cells in each stage. (Divide total of stage by overall total of 100 and then multiply by 100 to obtain percentage.)   Data Table 1Stage    Totals    PercentInterphase        Mitosis:        Prophase        Metaphase        Anaphase        Telophase        Cytokinesis        Totals    100    100% To find the length of time whitefish blastula cells spend in each stage, multiply the percent (recorded as a decimal, in other words take the percent number and divide by 100) by 24 hours. (Example: If percent is 20%, then Time in Hours = .2 * 24 = 4.8) Record your data in Data…
Knowledge Booster
Background pattern image
Biology
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
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Text book image
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Biology
ISBN:9781305967359
Author:STARR
Publisher:CENGAGE L
Text book image
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Text book image
Science Of Agriculture Biological Approach
Biology
ISBN:9780357229323
Author:Herren
Publisher:Cengage
Text book image
Essentials of Pharmacology for Health Professions
Nursing
ISBN:9781305441620
Author:WOODROW
Publisher:Cengage
Text book image
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
How do Plants Handle Stress?; Author: Alex Dainis;https://www.youtube.com/watch?v=TYsnveEHqec;License: Standard Youtube License