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1 FUNDAMENTALS OF PEST MANAGEMENT EXAM II Spring 2011 INSTRUCTIONS: Please read each question carefully before writing. Answer each question in a concise, coherent, logical, and complete manner. Please do not write extraneous material, hoping that it in some way answers the question. This is an open book exam, so you may use your class notes and readings. However, all responses must be in your own words. You may use any color font except red . The point value for each question is within parentheses. Please return your responses on this document through the Assignments link on the Sakai site no later than midnight EDT Saturday March 26, 2011. Please write your name here: Samantha Swanhart (1 point) Q#1. For each of the following, indicate whether you think the statement is true or false. (2 points each) A. True: For reflective mulch to be effective against a plant virus vector, viral transmission by the vector should be non-persistent circulative. B. False: Because quality control of biocontrol agents is regulated by the state, buyers receive a “money back guarantee” for the natural enemies they purchase. C. False: All predators are carnivores and eat entirely or partially several prey. Q#2. Think of the four distinctions between parasites and parasitoids. Which one of those distinctions explains (at least in part) why parasitoids make better biological control agents than parasites? Explain your choice. (5 points) Parasites rarely kill the host, Parasitoids always kill the host. This is a reason to justify why parasitoids are better biological control agents because they are guaranteed to always kill the host, therefore there is less risk in wasting resources or assets in controlling a problem. Q#3. Describe the conceptual mechanism of how resource competitors are useful in applied biological control of plant pathogens . (6 points) A resource competitor utilizes the same host as a pathogen, but must not cause or have a
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