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Quiz 4 - Version B

True/False:

 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.

Multiple Choice:

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
     an insect's:
     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.

Matching:

Use the following key to identify the type of resistance mechanism
described in questions 16-20:
                                           A.  Antibiosis
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
                                         C.  Persistent
22.  Imaginary infestation               D.  Delusory parasitosis
                                         E.  Economic injury level
23.  Pathogen, host, and vector          F.  Allergen
                                         G.  Non-persistent
24.  Decision point for control          H.  Economic threshold
     tactics                             I.  Antibody

25.  Chemical agent that induces
     an immune response



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