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 hormones
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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 hormones
Step by step
Solved in 2 steps
- In response to plant pathogens, plants will ______ hypersensitivity response and ____ salicyclic acid levels. Select one: a. suppress, increase b. suppress, decrease c. promote, decrease d. promote, increaseWhich 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 insectsAn immune response against grass pollen often involves: A. Pathogen-associated molecular patterns B. Persistent infection by the pollen C. A hypersensitivity reaction D. Non-specific reaction
- Which of the following statements about the epiginome is correct? 1. It is dynamic. 2. It is heritable. 3. It can be a target for drug therapy. 4. It can change based on our life experiences. A. 1, 2 and 3 B. 1 and 3 C. 2 and 4 D. 4 only E. All of 1, 2, 3 and 4 are correct.Plants 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.Choose 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.
- 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 answerPlants 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.Name 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. basil
- 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 surfacesMatch the hormone with the observation. ___ ethylene a. Your cabbage plants form ___ cytokinin elongated flowering stalks. ___ auxin b. The potted plant in your room ___ gibberellin is leaning toward the window. ___ ABA c. The last of your apples is getting ___ nitric oxide really mushy. d. The seeds of your roommate’s marijuana plant do not germinate no matter what he does to them. e. Lateral buds are sprouting. f. Your lettuce plants develop brown spots on their leaves.14. As a response to parasitic worms, the following cell gets activated? A. TH1 B. TH2 C. TH3 D. TH17 15. As a response to extracellular pathogens, the following cell gets activated? C. TH3 A. TH1 B. TH2 D. TH17