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Quiz 4 - Version C


 1.  A persistent virus will eventually lose its abilty to cause
     an infection.

 2.  Allergens from fleas and cockroaches in a home or office may 
     stimulate antixenosis.

 3.  Systemic insecticides are translocated through the vascular
     system of a plant or the circulatory system of an animal.

 4.  Antibiosis is characterized by a plant's ability to outgrow
     and/or repair damage resulting from an insect attack.

 5.  At the economic threshold, the cost of damage equals the cost 
     of control.

 6.  Window screens and electronic "bug zappers" are two examples
     of cultural pest control.

 7.  Environmental persistence is regarded as a major disadvantage
     of the synthetic pyrethroids.

Multiple Choice:

 8.  Which of these is an "unbiased" sampling strategy?
     A.  Malaise trap                C.  Light trap
     B.  Sticky trap                 D.  None of these

 9.  Breeding nursey stock for higher levels of secondary plant
     compounds would be an example of:
     A.  Antixenosis                 C.  Xenobiosis
     B.  Antibiosis                  D.  Tolerance

10.  Which of these is likely to be regarded as the most "useful" 
     biological control agent?
     A.  A beetle that feeds on kudzu.
     B.  A parasite of lady beetles.
     C.  A predator of robber flies.
     D.  A viral pathogen of lacewings.

11.  To which of these groups do insect pathogens belong?
     A.  Viruses and bacteria        C.  Protozoa and fungi
     B.  Bacteria and protozoa       D.  All of these

12.  Pest outbreaks tend to occur when:
     A.  Crops are planted in monoculture.
     B.  Natural enemies are imported from abroad.
     C.  Farmers switch to new crops.
     D.  All of these.

13.  Biological control is likely to be MOST effective when the
     predator or parasite has a(n):
     A.  Long life cycle
     B.  Wide range of preferred hosts
     C.  High reproductive rate
     D.  All of these

14.  Which insect orders contain species that are important pests 
     of domestic animals?
     A.  Siphonaptera and Coleoptera
     B.  Orthoptera and Hemiptera
     C.  Diptera and Phthiraptera  
     D.  All of these

15.  Which control strategy is likely to have the greatest impact 
     on non-target organisms?
     A.  Chemical control            C.  Cultural control
     B.  Biological control          D.  Physical/mechanical control


Which control strategy in the right column would be most appropriate
for the situations listed in the left column.  Letters may be used
once, more than once, or not al all.

16.  A pest complex in apples          A.  Fumigants
                                       B.  Systemic insecticides
17.  Whiteflies on greenhouse          C.  Repellants
     tomatoes                          D.  Synthetic pyrethroid
                                       E.  Predators & parasites
18.  Leaf miners in houseplants        F.  Sterile males
                                       G.  Cultural control
19.  Mosquito larvae in a lake         H.  Sex pheromone traps

20.  Keeping insects out of a
     shipping container

Match each insect in the left column with one in the right
column that is a pest of the SAME crop or commodity.

21.  Sod webworm                       A.  Apple maggot
                                       B.  Tent caterpillar
22.  Codling moth                      C.  Cotton aphid
                                       D.  Mole cricket
23.  Gypsy moth                        E.  Thrips

24.  Whitefly

25.  Boll weevil

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