Classic Classic Quiz Plant Biology Final by Er1cajt Er1cajt 16 played - 13 yrs ago Final Exam study QUIZ 25 QUESTIONS hard Biology 1 What is a pathogen? Disease-causing living organismsBacteriaChemical 2 What are the three major classes of plant pathogens Fungi, bacteria, virusesFungi, bacteria, illnessBacteria, viruses, mineral 3 What is a symptom of a disease? A physical expression of a diseasePhysical evidence of the pathogenEnvironmental stress 4 List 5 examples of symptoms Drought, flooding, freezing, nutrients, fertilizerBlights, rots, spots, holes, leaf distortionSpinosad, coppers, pyrethrum. rotenone, bacillius 5 What is a sign of a disease? Physical evidence of the pathogen that is causing the diseasePhysical expression of a diseaseDiscoloration 6 What is an example of a sign? Bacterial oozesHeatRots 7 What is a disorder? Caused by non-living or environmental stressPhysical evidence of the pathogenPhysical expression of disease 8 The pathogen, the environment, and the plant are PathogensThe three sides of the plant disease triangleLD50 9 What kinds of pesticides can be used on organic crops? Ones on The National ListOnes in the Organic ActOnes listed in the Farmers List 10 What is the LD50 of a chemical Measures the acute toxicity of a chemicalPathogensThe amount of nitrogen 11 A lower LD50 means A more toxic materialA higher toxic materialA stable toxic level 12 Coppers Disrupts cellular proteins in fungiDissolves caterpillar midgut liningMitochondrial activity in cells 13 Spinosad Nerve and stomach poison to many insectsDissolves caterpillar midgut liningHarms insect nervous systems 14 What is pesticide Bt? Contain the gene from bacillus thuringlensis bacteriumA natural biological insecticide- permitted for organic growersToxic 15 What is a transonic Bt crop? (Not permitted for use) InsecticideActive organic matterContain the gene from the bacillus thuringiensis bacterium and produces a Bt toxin 16 What is 'season extension' TransplantsAny number of strategies to increase the functional length of the growing seasonHeating of greenhouses 17 Transplants, rowcovers, heated greenhouses Examples of season shorteningExamples of planting techniquesExamples of season extension 18 Storage crops can be kept for many weeks or months after harvesting. examples? BreadCabbage, sweet potatoes, winter squashesOnions, eggs, cheese 19 What is aquaculture? A water ecosystemThe farming of marine and freshwater plants and animals for human consumtionThe study of marine animals and how they contribute to diets and agriculture 20 What is hydroponic agriculture? Growing plants in a nutrient solution, either with or without the use of an inert growing mediumEnvironmental degradationProduction where poor soil quality and climate occur 21 Filter Feeders Oysters, scallops, musselsSea urchinsCatfish, tilapia 22 Herbivores Oysters, scallops, musselsSea urchinsShrimp, cod, salmon 23 Omnivores Sea urchinsShrimp, cod, salmonCatfish, tilapia 24 Carnivores Catfish, tilapiaShrimp, cod, salmonOysters, scallops, mussels 25 Currently farmed fish (40% is farmed in aquaculture) Oysters, catfish, salmonShellfish, salmon, grouperOtter, goldfish, tuna A mistake in this Quiz ? Contact the author Commentaires
