Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 57.2, Problem 3CC
Summary Introduction
To describe: The effective defense system in deterring invertebrate herbivores.
Introduction: Plants have developed some defense mechanism to protect themselves from animals. Some plants have modified their leaves to thorns and spines as a part of the defense mechanism. Some plants have developed chemicals to protect themselves from a predator.
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Check out a sample textbook solutionStudents have asked these similar questions
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?
Which of the following is the function of cytokinin?
A. activation of defense response from biotrophic and hemi-biotrophic pathogens
B. structurally related to animal steroid hormones for growth and development
C. long distance (root-to-shoot) signals for nitrogen assimilation
D. defense from necrotrophic pathogens and herbivore insects
Chemical Defenses:
What is the benefit of having an inducible chemical defense, as opposed to a constitutive chemical
defense? (an inducible defense is when the chemical is produced when herbivory is taking place as
opposed to a constitutive defense where the chemical is always present)
Inducible chemical defense best deters herbivory.
With inducible defense predation will take place before a defense compound is produced which means there
is damage to the plant before a defense is employed.
With inducible defense herbivores are deterred even if no defense compound is produced.
With inducible defenses energy is conserved by only producing secondary compounds when needed instead
of continually.
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Chapter 57 Solutions
Biology
Ch. 57.1 - Prob. 1CCCh. 57.1 - Prob. 2CCCh. 57.1 - Prob. 1EQCh. 57.1 - Prob. 2EQCh. 57.1 - Prob. 3EQCh. 57.2 - Prob. 1CCCh. 57.2 - Prob. 2CCCh. 57.2 - (a) A quahog clam, cless Bavalvia (b) A chlton,...Ch. 57.2 - Prob. 3CCCh. 57.2 - Prob. 2CS
Ch. 57.2 - Core Skill: Connections More than 4,500 species of...Ch. 57.3 - Prob. 1CCCh. 57.3 - Prob. 1CSCh. 57.4 - Prob. 1CCCh. 57.4 - Core Skill: Modeling The goal of this modeling...Ch. 57 - Prob. 1TYCh. 57 - Prob. 2TYCh. 57 - Prob. 3TYCh. 57 - In Lacks study of passerine birds in Britain,...Ch. 57 - Prob. 5TYCh. 57 - Prob. 6TYCh. 57 - Prob. 7TYCh. 57 - Prob. 8TYCh. 57 - Prob. 9TYCh. 57 - Prob. 10TYCh. 57 - Prob. 1CQCh. 57 - Prob. 2CQCh. 57 - Prob. 1COQCh. 57 - Prob. 2COQCh. 57 - Prob. 3COQ
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- Choose the correct answer. These are chemical messenger that modulate the development of the different organs such that their relative growth is integrated and coordinated with each other? a) Psychohormones b) Fertilizers c) Phytohormones d) Plant Nutrientsarrow_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_forwardPlant-to-plant signalling in response to herbivory is mediated by Select one: a)lignin deposition b)abscisic acid c)the anti-malarial molecule artemisin d)volatile organic compoundsarrow_forward
- Why are some plants called C4 plants and why are they important? How have they adapted to unfavorable climatic conditions? How do the activities of C4 plants compare with the activities of CAM plants?arrow_forwardChoose the one answer that fits best. Which of the following is NOT true with respect to plant defenses? O a. Plants are susceptible to infections by bacteria and fungi. O b. Some plant produce chemicals that inhibit the growth of other plant species. O c. Some plant produce pheromones to alert other members of the same species of the presence of herbivores. d. Some plants produce volatile chemicals with strong odors that are unpleasant to herbivores. e. All plants produce toxic chemicals to prevent infection from bacteria and fungi as well as to deter herbivores.arrow_forwardPlants have systemic defense mechanisms (i.e., those that are not normally active but can be induced when the plant is under attack). Briefly describe an example of one systemic defense, including the processes, structures and/or molecules involved.arrow_forward
- Can the specific component of the plant immune system (the one using R genes) defend against both biotrophic and necrotrophic pathogens?arrow_forwardPlants have systemic defense mechanisms ( those that are not normally active but can be induced when the plant is under attack) describe an example of one systemic defense, including the processes, structures and/or molecules involved.arrow_forwardComparison between plants and humans defenses in DEFENSE MECHANISMS sarrow_forward
- Which of the following are examples of indirect chemical defenses? (Select all that apply). Extrafloral nectar Toxins Trichomes Compounds that make the plant taste bad Volatile organic compounds (VOCs)arrow_forwardSystemic acquired resistance______ . a. occurs in response to pathogen detection b. causes the release of volatile chemicals c. is a hypersensitive response to pathogens d. defends the plant against herbivory e. does not involve hormonesarrow_forwardWhat are the effects brought by cytokinin in plants? Explain the partnerships between cytokinin with auxin and hormone mentioned in Question 3 a). (i) (ii) Write an account on interactions between gibberellins, indole acetic acid and abscisic acid in plant growth promotion and seed germination.arrow_forward
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