PESTICIDE LICENSE EXAM ACTUAL TEST
PAPER 2026 COMPLETE QUESTIONS AND
ANSWERS GRADED A+
⩥ Nicotinoid. Answer: A class of insecticides which act on the central
nervous system of insects with lower toxicity to mammals.
⩥ Carbamates. Answer: Urethanes such as carbaryl, aldicarb, etc. that
are used as pesticides
⩥ Inorganics. Answer: Compounds considered to be of mineral and not
biological origin.
⩥ Spinosyns. Answer: A new safer class of insect control products made
by a mixture of two fermentation-derived products
⩥ Pyrethroids Answer: modern synthetic pesticides derived from
chrysanthemum pyrethrin, include active ingredient in Raid, permethrin;
Break down quickly but harm many beneficial insects
⩥ Organophosphates Answer: organic compounds that contain
phosphorus and were created from German nerve gas. Malathion is an
example. They are more poisonous than other insecticides and they are
toxic to other animals other than insects, especially humans. They do
,NOT persist in the environment as long as chlorinated hydrocarbons.
They are used in large scale agriculture but are not available to the
consumer because of the toxicity of them. Those who work with them in
agriculture have to attend classes to learn how to use them and also
protect themselves while spraying.
⩥ Fipronil (Phenylpyrazoles) Answer: A broad spectrum insecticide that
disrupts the insect central nervous system.
⩥ LD50 interpretation Answer: The dose required to kill half the
members of a tested population after a specified test duration.
⩥ Signal word interpretation Answer: The signal word indicates
approximately how toxic the pesticide product is. Products that are
highly toxic must display on the label the signal words DANGER-
POISON along with a skull and crossbones symbol. Products that
display only the signal word DANGER are corrosive and can cause
irreversible eye damage or severe skin injury. Products that display the
signal word WARNING are moderately toxic or can cause moderate eye
or skin irritation. Products that display the signal word CAUTION are
slightly toxic or may cause slight eye or skin irritation.
⩥ Insecticides Answer: MOA, a chemical that kills insects
⩥ Larvicides Answer: MOA, Kills larvae, which are the wormlike forms
of newly hatched insects.
,⩥ Ovicides Answer: MOA, A chemical that destroys an organism's eggs.
⩥ Nematicides Answer: MOA, kills tiny hair-like worms which live in
the soil and feed on plant roots.
⩥ Acaricides Answer: MOA, pesticide for mites, ticks, and spiders
⩥ Fungicides Answer: Chemical compounds or biological organisms
used to kill or inhibit fungi or fungal spores.
⩥ What are the symptoms of Bacterial Fire Blight? Answer: "Blossoms
and leaves suddenly wilt and die, but remain attached. Secondary
infections start in small twigs, and may involve whole branches.
Blighted terminals may bend to resemble a shepherds crook. Dark
streaking of the wood extends inches beyond diseased area. Cankers on
limbs are shrunken, and ooze an orange gum or slime."
⩥ "Where does the Fire Blight bacteria over-winter, and how is it
spread?" Answer: "In cankers on the plant. They are spread by wind
blown rain, insects, and pruning tools."
⩥ What do nematodes live in and feed on? Answer: Nematodes live in
the soil and feed on plant roots.
, ⩥ What does root-knot nematodes cause? Answer: Small knots on roots
⩥ What do other types of nematodes kill? Answer: The tips of feeder
roots
⩥ What are the symptoms of nematode damage above ground? Answer:
"Yellowing of foliage, stunting, and a general decline of the plant."
⩥ It is difficult to distinguish between the symptoms of nematode
damage and root rot infection. What is one way to confirm a nematode
infestation? Answer: Have soil and plant samples examined in a
laboratory to confirm a nematode infestation.
⩥ What is an example of a nematode disease of ornamentals? Answer:
Root-knot of boxwood
⩥ What are the types of chemicals available for disease control?
Answer: "Protective chemicals, Systemic chemicals, Soil fumigants"
⩥ What are protective chemicals applied to? Answer: "Foliage, flowers,
and fruit"
⩥ What are protective chemicals subject to and when should they be
reapplied? Answer: The are subject to weathering and should be
reapplied regularly.
PAPER 2026 COMPLETE QUESTIONS AND
ANSWERS GRADED A+
⩥ Nicotinoid. Answer: A class of insecticides which act on the central
nervous system of insects with lower toxicity to mammals.
⩥ Carbamates. Answer: Urethanes such as carbaryl, aldicarb, etc. that
are used as pesticides
⩥ Inorganics. Answer: Compounds considered to be of mineral and not
biological origin.
⩥ Spinosyns. Answer: A new safer class of insect control products made
by a mixture of two fermentation-derived products
⩥ Pyrethroids Answer: modern synthetic pesticides derived from
chrysanthemum pyrethrin, include active ingredient in Raid, permethrin;
Break down quickly but harm many beneficial insects
⩥ Organophosphates Answer: organic compounds that contain
phosphorus and were created from German nerve gas. Malathion is an
example. They are more poisonous than other insecticides and they are
toxic to other animals other than insects, especially humans. They do
,NOT persist in the environment as long as chlorinated hydrocarbons.
They are used in large scale agriculture but are not available to the
consumer because of the toxicity of them. Those who work with them in
agriculture have to attend classes to learn how to use them and also
protect themselves while spraying.
⩥ Fipronil (Phenylpyrazoles) Answer: A broad spectrum insecticide that
disrupts the insect central nervous system.
⩥ LD50 interpretation Answer: The dose required to kill half the
members of a tested population after a specified test duration.
⩥ Signal word interpretation Answer: The signal word indicates
approximately how toxic the pesticide product is. Products that are
highly toxic must display on the label the signal words DANGER-
POISON along with a skull and crossbones symbol. Products that
display only the signal word DANGER are corrosive and can cause
irreversible eye damage or severe skin injury. Products that display the
signal word WARNING are moderately toxic or can cause moderate eye
or skin irritation. Products that display the signal word CAUTION are
slightly toxic or may cause slight eye or skin irritation.
⩥ Insecticides Answer: MOA, a chemical that kills insects
⩥ Larvicides Answer: MOA, Kills larvae, which are the wormlike forms
of newly hatched insects.
,⩥ Ovicides Answer: MOA, A chemical that destroys an organism's eggs.
⩥ Nematicides Answer: MOA, kills tiny hair-like worms which live in
the soil and feed on plant roots.
⩥ Acaricides Answer: MOA, pesticide for mites, ticks, and spiders
⩥ Fungicides Answer: Chemical compounds or biological organisms
used to kill or inhibit fungi or fungal spores.
⩥ What are the symptoms of Bacterial Fire Blight? Answer: "Blossoms
and leaves suddenly wilt and die, but remain attached. Secondary
infections start in small twigs, and may involve whole branches.
Blighted terminals may bend to resemble a shepherds crook. Dark
streaking of the wood extends inches beyond diseased area. Cankers on
limbs are shrunken, and ooze an orange gum or slime."
⩥ "Where does the Fire Blight bacteria over-winter, and how is it
spread?" Answer: "In cankers on the plant. They are spread by wind
blown rain, insects, and pruning tools."
⩥ What do nematodes live in and feed on? Answer: Nematodes live in
the soil and feed on plant roots.
, ⩥ What does root-knot nematodes cause? Answer: Small knots on roots
⩥ What do other types of nematodes kill? Answer: The tips of feeder
roots
⩥ What are the symptoms of nematode damage above ground? Answer:
"Yellowing of foliage, stunting, and a general decline of the plant."
⩥ It is difficult to distinguish between the symptoms of nematode
damage and root rot infection. What is one way to confirm a nematode
infestation? Answer: Have soil and plant samples examined in a
laboratory to confirm a nematode infestation.
⩥ What is an example of a nematode disease of ornamentals? Answer:
Root-knot of boxwood
⩥ What are the types of chemicals available for disease control?
Answer: "Protective chemicals, Systemic chemicals, Soil fumigants"
⩥ What are protective chemicals applied to? Answer: "Foliage, flowers,
and fruit"
⩥ What are protective chemicals subject to and when should they be
reapplied? Answer: The are subject to weathering and should be
reapplied regularly.
