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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Chapter 37, Problem 8TYK
Summary Introduction
Introduction:
A defense mechanism is presented by plants when they come in contact with a pathogen. This defense mechanism is triggered when the infection-causing pathogen or a substance produced by the pathogen binds with a specific region of the plant. This binding triggers the mechanism that results in actively fighting against the pathogen.
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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
Which of the following best describes evidence of a hypersensitive response?
Select one:
a. The bending of the coleoptile towards light.
b. The growth of roots down and shoots up.
c. When cells around an infection site die, depriving the pathogen of nutrients and preventing it from spreading.
d. When plants elongate in response to being shaded.
e. When stomata close despite plenty of CO 2 and water.
Some plants are recognized by fungal pathogens on the basis of their stomatal pores. Which of the following would provide these plants immunity from fungal infection?
a. Removing all of the stomata from the plant
b. Changing the spacing of stomatal pores in these plants
c. Reinforcing the cell wall in the guard cells of stomatal pores
d. Increasing the number of trichomes on the surfaces
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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- Systemic 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_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_forwardWhich hormone can regulate guard cells? Select one: a. ethylene b. abscisic acid c. gibberellin d. cytokinin e. auxinarrow_forward
- 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?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_forwardYou are trying to get some seeds started by soaking them in water. A few of the seeds are not taking in water or germinating- you suspect that their seed coat has excessive amounts of the hormone, that is keeping them from germinating. Select one: O A. В. C. D. O E. O F. G. O H. OI. J. O K. OL. O M. N. O. O P. R.arrow_forward
- What is the biological function of SOS in plants? Select one: a. it is a calcium antiporter b. it is a sodium transporter c. it alleviates stress by seeking help during drought d. it improves calcium nutrition in plants e. it promotes salt sensitivityarrow_forwardWhich of the following is NOT the benefit providing by transformed plants producing plant antibodies? Lütfen birini seçin: O a. To remove environmental pollutants O b. To increase resistance to pathogens O c. To increase the nutritional value of crop O d. To modulate plant properties O e. To stimulate human immunityarrow_forwardElaborate helps provided by the following materials/compounds in plant defense. (i) Phenolic compounds (ii) Trichomes (iii) Cutinarrow_forward
- 3. 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_forwardName 3 plant extracts that have demonstrated their significant antifungal activity against a broad range of fungal human pathogens. (Select all that apply) Choose at least one answer. a. fennel b. cilantro c. thyme d. basilarrow_forwardWhich hormone is associated with amylase production? Select one: a. gibberellin b. ethylene c. auxin d. cytokinin e. abscisic acidarrow_forward
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