Which statement about movement of pesticides from the
application site is true?
a) Drift is seldom an issue with indoor applications
b) Runoff and erosion are sources of surface water
contamination by pesticides
c) leaching is the main way that pesticides move great
distances Correct Answer b) Runoff and erosion are
sources of surface water contamination by pesticides
Which is an example of nonpoint-source contamination of
groundwater?
a) back-siphoning of pesticide spills at a wellhead
b) leaching from a pesticide mixing area
c) pesticides that dissolve and leach through soil after it
rains Correct Answer c) pesticides that dissolve and leach
through soil after it rains
Under which conditions are pesticides more likely to leach
through soil?
a) heavy clay soil, high in organic matter
b) sandy soil, high in organic matter
,c) sandy soil, low in organic matter Correct Answer c)
sandy soil, low in organic matter
Which best management practice will help prevent
contamination of surface water and groundwater by
pesticides?
a) using pesticides that are highly water-soluble
b) Following IPM principles
c) selecting persistant pesticides Correct Answer b)
Following IPM principles
Which 2 factors are most important in avoiding vapor drift?
a) Droplet size and wind speed
b) air stability and temperature
c) temperature and pesticide volatility Correct Answer c)
temperature and pesticide volatility
Which statement about sensitive areas is true?
a) do not spray a larger target site if it contains a sensitive
area
b) Pesticide labels may list special precautions around
sensitive areas
c) endangered species' habitats are not considered
sensitive areas Correct Answer b) pesticide labels may list
special precautions around sensitive areas
Which statement about protecting bees from pesticide
injury is true?
,a) Use foliar applications when possible
b) Spray crops when they are in bloom
c) apply insecticides in the evening or at night Correct
Answer c) apply insecticides in the evening or at night
List and describe the physical and chemical characteristics
of pesticides that determine how they will interact with the
environment (4) Correct Answer -solubility- ability of a
pesticide to dissolve in a solvent-usually water, high
solubility more likely to move with water in runoff or thru
soil
Which statement about harmful effects of pesticides is
false?
a) the most common form of pesticide injury is by
inhalation
b) asthma-like symptoms may be caused by allergies to
pesticides
c) many herbicides and fungicides cause dermatitis (skin
reaction) Correct Answer a) the most common form of
pesticide injury is by inhalation
Which signal word is associated with very low oral LD50
values? Correct Answer DANGER-POISON
Which statements about pesticide toxicity is true?
a) a pesticide with an oral LD50 of 5mg/kg is more toxic
than a pesticide with an LD50 of 250mg/kg
, b) Manufacturers are not required to include chronic
toxicity warning statements on product labels
c) the signal word on the product label indicates how likely
the product is to cause both acute and chronic toxic
effects Correct Answer a) a pesticide with an oral LD50 of
5mg/kg is more toxic than a pesticide with an LD50 of
250mg/kg
For which class(es) of pesticides might cholinesterase
monitoring be appropriate?
a) Organophosphate and carbamate insecticides
b) pyrethoids
c) phenoxy herbicides, such as 2,4-D Correct Answer a)
Organophosphate and carbamate insecticides
Which statement about what happens to pesticides inside
the body is true?
a) most pesticides used today are stored in our body fat
b) the kidneys filter pesticides from the blood into the urine
c) most chemical breakdown of toxic substances takes
place wherever the pesticide is first absorbed Correct
Answer b) the kidneys filter pesticides from the blood into
the urine
Which statement about pesticide exposure routes is true?
a) studies show that about 97% of all body exposure to
pesticides during a spraying operation is by inhalation
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