PLPA 100 JEOPARDY 100 200 300 400 500 Fungi Nematode Viruses Abiotic Bacteria Fungi Nematode Viruses Abiotic Plants Misc. 100 200 300 400 500 Darin Eastburn
The most common sign of a bacterial infection of plants What is bacterial ooze?
The method bacterial use to multiply What is binary fission?
Most plant pathogenic bacteria belong to this group (shape, etc.) What are gram negative rods?
What is seed transmission? A common method of overwintering and dissemination used by many plant pathogenic bacteria What is seed transmission?
The bacterial pathogen that causes fire blight of apples and pears What is Ewinia amylovora?
Claviceps purpurea, the cause of ergot of rye, overwinters as this fungal structure What is a sclerotium?
A rust life cycle that involves two different host plants What is heteroecious?
What is coenocytic hyphae? The type of hyphae, found in Oomycetes, which lacks any cross walls or septations What is coenocytic hyphae?
What are sanitation, fungicides, and host resistance, (or biocontrol)? These three control strategies are used to help manage Dutch elm disease What are sanitation, fungicides, and host resistance, (or biocontrol)?
The two species of fungi that can cause Dutch elm disease What are Ophiostoma ulmi and O. novo-ulmi ?
Most plant parasitic nematodes feed on these plant parts What are roots?
The soybean cyst nematode it believed to originate in this part of the world What is Asia?
All plant parasitic nematodes and plant viruses are in this group What are obligate parasites?
Two common symptoms of infection by root colonizing nematodes What are yellowing and stunting?
What is a migratory, endoparasite? A plant parasitic nematode that continues to move within the plants tissue to find new feeding sites What is a migratory, endoparasite?
The most common insect vectors of plant viruses What are aphids?
The term commonly used for the process of virus reproduction What is replication?
The most widely used method for detecting plant viruses What is ELISA?
Most plant viruses have this type of nucleic acid What is RNA?
What are acquisition, transmission, and retentions times? Three characteristics that distinguish persistant and non-persistant forms of virus transmission What are acquisition, transmission, and retentions times?
This soil property affects the amount and type of nutrients available to plants What is soil pH?
These two air pollutants undergo chemical reactions in the atmosphere and produce acid rain What are SO2 and NOX?
A change in plant health or normal function as a result of an instantaneous interaction with an external factor What is an injury?
Three ways that herbicide injury can occur What are tank contamination, drift, and carry over ?
Three characteristics of abiotic diseases that can help distinguish them from biotic disease What are affecting multiple species, uniform appearance, and patterns of distribution ?
The aecial host of black stem rust What is barberry?
The part of the world in which apples originated What is the Middle East?
The vascular tissue in a plant through which sugars are transported What is phloem?
Structures on soybean plants that contain bacteria which convert atmospheric nitrogen to fixed nitrogen What are root nodules?
What is secondary xylem? The type of tissue that is present in woody plants, but not herbacious plants What is secondary xylem?
What is corn smut? (caused by Ustilago maydis) A fungal disease that is also harvested as a gastronomic delicacy in Mexico and parts of the U.S. What is corn smut? (caused by Ustilago maydis)
A type of phytoplasma that has a spiral or helical shape What is a spiroplasma?
These pathogens differ from viruses in that they lack a protein coat, their nucleic acids do not include any genes, and they are not vectored by insects What are viroids?
A type of plant disease cycle in which the amount of disease is not related to the rate of spread during the season What is a monocyclic?
Three strategies used to prevent ergot and egrotism What are planting disease free seed, mowing, and early harvest?