Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Question
Chapter 37.2, Problem 1SB
Summary Introduction
To review:
The general and the specific chemical defenses of plants that are activated in response to a particular type of pathogen.
Introduction:
Unlike animals, the plants lack a proper immune system. However, they have evolved interesting mechanisms in order to combat the pathogenic attacks. Plants have the constitutive defense or barriers like bark, waxy coating, spines, hair, and chemicals that are produced in response to the pathogens. The bark and hair are similar to the animal skin. Secondary metabolites like alkaloids are produced in plants to kill the foreign bacterial cells.
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4 types of plant defenses are shown (a, b, c, d) in the figure below.
Explain two of the depicted defenses using the terms (constitutive OR induced) and (physical OR chemical)
(ie. letter e shows an example of a constitutive chemical response to deter organisms from eating it)
What are the two general ways by which plant pathogens gain entry into the host plant tissue? What are the advantages and disadvantages of each mechanism?
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)
Chapter 37 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 37.1 - Prob. 1SBCh. 37.1 - Prob. 2SBCh. 37.1 - Prob. 3SBCh. 37.2 - Prob. 1SBCh. 37.2 - Prob. 2SBCh. 37.2 - Prob. 3SBCh. 37.3 - Prob. 1SBCh. 37.3 - Prob. 2SBCh. 37.4 - Prob. 1SBCh. 37.4 - Prob. 2SB
Ch. 37.4 - Prob. 3SBCh. 37 - Prob. 1TYKCh. 37 - Which is the correct pairing of a plant hormone...Ch. 37 - Prob. 3TYKCh. 37 - Prob. 4TYKCh. 37 - Prob. 5TYKCh. 37 - Prob. 6TYKCh. 37 - Prob. 7TYKCh. 37 - Prob. 8TYKCh. 37 - Prob. 9TYKCh. 37 - Prob. 10TYKCh. 37 - Prob. 11TYKCh. 37 - Prob. 12TYKCh. 37 - Prob. 13TYKCh. 37 - Prob. 14TYKCh. 37 - Prob. 15TYKCh. 37 - Prob. 17TYKCh. 37 - Prob. 1ITDCh. 37 - Prob. 2ITDCh. 37 - Prob. 3ITD
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- How does a plant “know” it is under attack by a pathogen or herbivore? (name one thing the plant can initially recognize?)arrow_forwardExplain why there are often trade-offs between plantgrowth and plant defense.arrow_forwardOnce a plant has detected a pathogen, how does it protect itself?arrow_forward
- How does the plant hypersensitive response differ from systemic acquired resistance (SAR)?arrow_forwardWhich plant yields cannabinoids? List any two cannabinoids. Name the part of the body that is affected by its consumption.arrow_forwardElaborate helps provided by the following materials/compounds in plant defense. (i) Phenolic compounds (ii) Trichomes (iii) Cutinarrow_forward
- What is the effect of the plant pathogen to the infected or diseased plant?arrow_forwardCan the specific component of the plant immune system (the one using R genes) defend against both biotrophic and necrotrophic pathogens?arrow_forwardCan plants develop immunity to specific pathogens?arrow_forward
- What are Cannabinoids? From which plant Cannabinoids are obtained? Which part of the body is affected by consuming these substances?arrow_forwardWhat are some ways in which plants defend themselves from herbivores? Describe two physical defenses and two chemical defenses.arrow_forwardChemical 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. b 9 A....pdf XE A Week 9 Pre-lab.pdf A 10.7591 978150 A AY9_Week9_ng....xlsxarrow_forward
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