final - Student Name _ Weed Science, PLS 4601c Section 7644...

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Student Name _____________________________________________ Weed Science, PLS 4601c Section 7644 and Grad. – Prin. Of Weed Science AGR 6932 Section 9212 University of Florida - Davie http://grove.ufl.edu/~turf/weedscience/ Philip Busey, turf@ufl.edu 954-579-3932 (cell) August 6, 2009 Final Exam Multiple choice - circle the right answers, 3 pts. X 50 1. What is the scientific name of tropical soda apple? a) Dioscorea bulbifera b) Imperata cylindrica c) Lygodium microphyllum d) Neyraudia reynaudiana e) Solanum viarum 2. Which is a contact herbicide? a) 2,4-D b) glyphosate c) imazapyr d) metsulfuron e) paraquat 3. To which concept does the following statement apply: “Averaged over 3 yr, the daily, conditional weekly, and severely wilted irrigation treatments resulted in 30, 6, and 2% dollarweed cover, respectively.” a) a weed as a plant out of place b) cultural management of weeds c) invasive properties of weeds d) negative aspects of weeds e) selective herbicidal control of weeds
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Weed Science – Final Exam - Univ. Florida - Davie Page 2 4. What do the expressions DF, EC, G, L, WDG, WP, WS, and WSP pertain to? a) herbicide formulation b) invasive qualities of weeds c) LD 50 d) the binomial system of nomenclature e) categories of pesticide license 5. The most permanent of environmental degradations: a) biological invasion b) drainage of the Everglades c) nuclear accidents d) pesticide contamination e) phosphate contamination 6. What can you say about the weed to the right: a) interpetiolar stipules b) long petioles c) opposite leaves d) parallel venation e) vine 7. Who wrote Silent Spring? a) Aristotle b) Fritz Haber c) James Watson d) John Dalton e) Rachel Carson 8. The family of the plant on the right is: a) Asteraceae b) Fabaceae c) Cynodon d) Poaceae e) Rubiacaeae
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Weed Science – Final Exam - Univ. Florida - Davie Page 3 9. Which herbicide is translocated towards the apex: a) atrazine b) fluazifop-p c) glyphosate d) oxadiazon e) paraquat 10. The weed to the right is in which family: a) coffee b) grasses c) pea d) sedges e) sunflower 11. Which herbicide is most toxic (acute oral to adult rats): a) LD 50 = 112 b) LD 50 = 343 c) LD 50 = 1800 d) LD 50 = 2300 e) LD50 = 3900 12. What is the relevance of the phrase, “applying a pesticide against any target pest not specified on the labeling if the application is to the crop, animal, or site specified on the labeling” in the legal definition of the manner that pesticides can be used. a) It is a form of warranty from the manufacturer. b) It is an exception to the requirement to use a pesticide on a specific crop and site. c) It is an exception to the restriction on using any registered pesticide in a manner not permitted by the labeling. d)
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final - Student Name _ Weed Science, PLS 4601c Section 7644...

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