1. Insects in the orders Coleoptera and Lepidoptera are major
pests of stored grain.
2. Mass trapping is generally an ineffective control strategy
at low pest densities.
3. Clean cultivation and crop rotation are two examples of
biological insect control.
4. Mechanical transmission occurs when a vector ingests a
pathogen from a host reservoir.
5. Organophosphates are characterized by a relatively high
degree of environmental persistence.
6. Antixenosis is the only type of pest control that will
inhibit the development of resistance in a target population.
7. Biological magnification is an environmental problem usually
associated with synthetic pyrethroid insecticides.
8. Insects in the orders Hemiptera and Thysanoptera are the most
important vectors of plant diseases.
9. Quarantine and certification are two examples of legal tactics
used for insect control.
10. All stinging insects belong to the order Hymenoptera.
11. Which common name is INCORRECTLY written?
A. Horsefly C. Honey bee
B. Ground beetle D. Lightningbug
12. As human consumers become less tolerant of insect damage on
fruit, the economic thresholds for fruit pests are likely to:
A. Increase C. Remain the same
B. Decrease D. No way to tell
13. Which of these is NOT considered an insect growth regulator?
A. Synthetic pyrethroid C. Juvenile hormone analogue
B. Chitin inhibitor D. Ecdysteroid
14. Organophosphate and carbamate insecticides work by disrupting
A. Digestive system C. Nervous system
B. Respiratory system D. Endocrine system
15. The sterile-male technique would probably NOT work well for an
insect pest whose:
A. Population is extremely abundant.
B. Individuals are easily mass reared.
C. Females mate only once in their lifetime.
D. Males are very strong fliers.
Use the following key to identify the type of resistance mechanism
described in questions 16-20:
16. Cottonseed oil contains an B. Antixenosis
insect feeding repellant. C. Tolerance
17. Aphids tend to avoid alfalfa
plants that have hairy leaves.
18. Strawberry plants set more fruit when they are
damaged by weevils.
19. Certain blueberry cultivars produce compounds that are toxic
to newly hatched leafhoppers.
20. High photosynthetic efficiency of a soybean cultivar
compensates for leaf injury by insects.
Match each definition with an appropriate term from the right column:
21. Subject to loss of A. Entomophobia
virulence B. Biocenosis
22. Imaginary infestation D. Delusory parasitosis
E. Economic injury level
23. Pathogen, host, and vector F. Allergen
24. Decision point for control H. Economic threshold
tactics I. Antibody
25. Chemical agent that induces
an immune response
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