Provide one example of effective plant defense strategy designed to prevent infection by a necrotropich pathogen OR get an herbivore to stop eating it, and B) provide one example of an effective plant defense strategy designed to prevent infection by a biotrophic pathogen
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QUESTION 7
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A) Provide one example of effective plant defense strategy designed to prevent infection by a necrotropich pathogen OR get an herbivore to stop eating it, and
B) provide one example of an effective plant defense strategy designed to prevent infection by a biotrophic pathogen
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- 1. a) Glyphosate (Roundup) is toxic to almost all types of plants. Why is it generally considered to be animal-safe? b) Why does it take at least 7 days for the herbicidal effect to be observed?Imagine that you are part of a team of phytopathologists working with your state's Department of Conservation in an effort to protect the native plant species in your state. In your role, you are to determine the mechanism by which diseased plant species are being damaged. Additionally, it is vital that you are capable of communicating the significance of your findings to the general community in your efforts to protect the plant. Determine the plant tissues and structures that are directly impacted in the ailing plants. Plant Species: Frasier fir (Abies fraseri) Field Notes/Physical Symptoms • Browning of needles Premature death-trees seem to die over course of years, not reaching full life еxpectancy Laboratory/Metabolic Analysis Abnormally high transpiration rate across leaves Low photosynthetic rate Water levels of plant tissues very low Unusually high evidence of insect herbivory to leaves High levels of epidermal cell damage-likely due to ultra-violet radiation Diagnosis Tissues…What do plant pathogens and parasite have in common?
- 11.a) The roots of legumes, such as peas and beans, have special nodules that are home to large numbers of bacteria. What benefit do these bacteria provide to the plant? What do they receive inexchange? b)Virtually all plant species have some way of protecting themselves against herbivores. Yet there exist many thriving species of herbivores across the globe. Demonstrate how these two realities can coexist. c)Compare and contrast the two types of root systems. Describe the characteristics of each.II. Match the terms associated with plant nutrition with its description. A) Mycorrhizae B) Root nodules C) Predator D) Root hairs E) Parasite 6. A plant that absorbs nutrients created by another plant. 7. A plant in a nutrient deficient environment digest small insect as an alternative nutrient Source. 8. Where absorption of nutrients from epidermal outgrowth of the root cells. 9. Found on roots where bacterial cells exist symbiotically as a source of nitrogen for the plant. 10. A symbiotic relationship for nutrient source of plant and fungus.Distinguish between biotrophic and necrotrophic plant pathogens.
- Plants 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.Which of the following biofertilizer extends the root system's reach, allowing for enhanced water and nutrient absorption? Explain.a. Bio-N (Corn) [Azospirillum lipoferum and Azospirillum brasilense] b. Trichoderma [Trichoderma sp.]c. Mykovam [vesicular arbuscular mycorrhiza]Why would an agricultural extension agent recommend planting alegume, such as clover, in a pasture?
- The specific relationship between a legume and its mutualisticRhizobium strain probably depends on(A) each legume having a chemical dialogue with a fungus.(B) each Rhizobium strain having a form of nitrogenase thatworks only in the appropriate legume host.(C) each legume being found where the soil has only theRhizobium specific to that legume.(D) specific recognition between chemical signals and signalreceptors of the Rhizobium strain and legume species.The _________ symbiotic association results in the formation of root nodules wherein the bacteria convert atmospheric nitrogen into _________ that can be utilized by the host plant. I NEED AN ANSWER ASAPAnemophily is the pollination by –a) Birdsb) Rainc) insectsd) Wind