The hormone that helps plants respond to drought is
- A. auxin.
- B. abscisic acid.
- C. cytokinin.
- D. ethylene.
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.
The hormone that helps plants to respond to drought is abscisic acid.
Want to see more full solutions like this?
Chapter 31 Solutions
EBK CAMPBELL BIOLOGY IN FOCUS
Additional Science Textbook Solutions
Biological Science (6th Edition)
College Physics: A Strategic Approach (3rd Edition)
Laboratory Manual For Human Anatomy & Physiology
SEELEY'S ANATOMY+PHYSIOLOGY
Physical Universe
Biology: Life on Earth with Physiology (11th Edition)
- Using information from the primary literature (several references have been provided as a starting point below) please answer the following question: Based on your review of the literature on rewilding, what are the major scientific pros and cons for rewilding? Please note that the focus of this assignment are the (biological) scientific issues associated with rewilding. As will be discussed in class, there are a number of non-scientific issues involved or implicated in rewilding, all ultimately affecting the public acceptability of rewilding. Although these issues are important – indeed, critical – in this assignment you should focus on the biological science issues and questions. Details: You must enumerate at least two pros and at least two cons. Your answer should be no more than 500 well-chosen words, excluding references. Think carefully about how best to organize and structure your answer. Aim for high information density: say a lot, but say it succinctly. Recall Nietzche’s…arrow_forwardNow draw a rough sketch of what the control data might look like if in addition to the specific binding, there was also a considerable amount of nonspecific binding (again using a normal dose/response curve) (do % total bound ligand vs concentration)arrow_forwardWhat are functions of cuboidal cells in the kidney? Select all that apply. Concentration of gases Dilution of chemicals Secretion of molecules Nutrition to tissues Support of tissues Absorption of moleculesarrow_forward
- question1 In plants, epithelial tissue is only found as the outermost cell layer and acts as a barrier. In humans, epithelial tissue is found inside the body as well as on the surface. What function(s) does/do epithelial tissue carry out in humans? Select all that apply. Waste storage Filtration Oxygen transport Protection Diffusion Osmosis Absorptionarrow_forwardWhat words best describes this organism? a. Unicellular/nonmotile Ob. unicellular/motile c. colonial/nonmotile d. colonial/motile e. multicelluar O f. siphonous g. none of thesearrow_forwardIdentify the phylum or class. a. Euglenophyta b. Dinoflagellata c. Bacillariophyceae d. Oomycetes e. Phaeophyceae O f. Myxomycota g. Xanthophyceae ○ h. Chrysophyceae i. Dictyosteliomycota O j. Rhodophyta Ok. Chlorophyceaens I. Charophyceaensarrow_forward
- What is produced inside the indicated structure (Fucus). a. eggs O b. antheridia ○ c. sperm d. zygotes e. none of thesearrow_forwardGreen Algae, as a group, is actually paraphyletic with one subgroup more closely related to higher plants than the other. Which of the following green algae groups is more closely related to higher plants: a. Charophyceans b. Chlorophyceans c. Rhodophyta d. Xanthophyceansarrow_forwardA single-celled green algal genus that is motile with 2 flagella, has a cup shaped chloroplast, and an eyespot: a. Volvox b. Chlamydomonas c. Euglena d. Codiumarrow_forward
- A[n] ___ is produced by members of the Myxomycota when there is a lack of moisture. a. plasmodiocarp b. aethalium c. sclerotium d. plasmodiumarrow_forwardWhich of the following is not true about the life-cycle of Fucus. a. 8 eggs per oogonium b. 64 sperm per antheridium c. eggs are flagellated d. sperm are flagellatedarrow_forwardGreen Algae, as a group, is actually paraphyletic with one subgroup more closely related to higher plants than the other. Which of the following green algae groups is more closely related to higher plants: a. Charophyceans b. Chlorophyceans c. Rhodophyta d. Xanthophyceansarrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningBiology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning
- Essentials of Pharmacology for Health ProfessionsNursingISBN:9781305441620Author:WOODROWPublisher:CengageConcepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College