PCA Exam Practice Test Questions And Answers Verified 100% Correct

PCA Exam Practice Test Questions And Answers Verified 100% Correct 1. Common generalist predators of small soft-bodied insects include: A. Spiders, scale insects and thrips B. Minute pirate bugs, spiders, and lady beetle larvae C. Beetles, hornworms and dragonfly larvae D. Damselflies, lady beetles and whiteflies - ANSWER -B. Minute pirate bugs, spiders, and lady beetle larvae 2. Which of the following statements is true regarding the insect orders hymenoptera and dipteral? A. Most economic pests of orchard and vine crops belong to these orders B. Most species in these orders are pests of mammals because they sting or bite C. The majority of parasitic insects belongs to these orders D. The majority of generalist predators belong to these orders - ANSWER -C. The majority of parasitic insects belongs to these orders 3. Certain viruses, bacteria and fungi are: A. Available commercially in formulations to be used as insect pathogens B. Overwinter in dead host material C. Available commercially in formulations to control weeds D. Both A and C - ANSWER -A. Available commercially in formulations to be used as insect pathogens 4. In which of the following locations have biocontrol efforts for weeds been most successful? A. Short-season vegetable crops B. Deciduous fruit tree orchards C. Rangelands D. Desert field crops such as cotton - ANSWER -C. Rangelands 5. Suppressive soils are soils in which: A. Crop plants do not grow very well B. Disease incidence remains low despite favorable environmental conditions and the presence of pathogens C. High levels of invertebrate biocontrol agents are present D. Weeds will not grow - ANSWER -B. Disease incidence remains low despite favorable environmental conditions and the presence of pathogens 6. Which of the following is an example of a cultural practice involving sanitation? A. Using fences to exclude vertebrate pests from an area B. The use of certified seed C. Use of microbial pesticides instead of synthetic pesticides D. All of the above - ANSWER -B. The use of certified seed 7. Destroying alternate osts is most often used for the control of which types of pests? A. Pathogens and insects B. Weeds and insects C. Vertebrates and mollusks D. Mollusks and nematodes - ANSWER -A. Pathogens and insects 8. Which of the following can be an advantage of using cover crops? A. Reduced irrigation costs B. Reduced soil erosion C. Increased soil moisture D. Decreased rodent population - ANSWER -B. Reduced soil erosion 9. Which of the following pests could be controlled with crop rotation? A. A highly lmobile insect with a narrow host range B. An entomopathogenic nematode with a narrow host range C. An insect with a broad host range which tends to not disperse widely D. An endoparasitic nematode with a narrow host range - ANSWER -D. An endoparasitic nematode with a narrow host range 10. Scheduling a crop for an earlier harvest date can have what effect? A. It can increase the amount of available nitrogen in the soil for the subsequent crop B. It can reduce the number of generations of specific pests C. It can break the lifecycle of most ectoparacitic nematodes D. It can stop the reproductive cycle of foliar plant viruses - ANSWER -B. It can reduce the number of generations of specific pests 51. Increasing the amount of available nitrogen in the soil: A. Always improves yields and makes crops more competitive against pests B. Can improve crop vegetative growth and attract or increase pests C. Improves crop growth and decreases growth of weedy species D. Can decrease crop growth by causing other nutrients to become limiting - ANSWER -B. Can improve crop vegetative growth and attract or increase pests 52. What is "conservation tillage"? A. Tillage methods that do not disturb any more than the top 3 inches of soil B. Tillage methods that are acceptable under organic farming laws C. Weed control methods such as mowing and flaming that do not kill plant roots D. Methods of tillage that leave at least 30% plant residue cover on a field - ANSWER -D. Methods of tillage that leave at least 30% plant residue cover on a field 53. Which of the following would work best for soil solarization? A. A clear layer of plastic over moist soil B. A clear layer of plastic over dry soil C. A dark layer of plastic over moist soil D. A dark layer of plastic over dry soil - ANSWER -A. A clear layer of plastic over moist soil 54. Which of the following is a mechanical method for controlling aquatic weeds? A. Selective herbicides