Washington Pesticide Laws and Safety Exam With Complete
Solutions Latest Update
Absorption - ANSWER The uptake of chemical into plants, animals (including humans),
microorganisms, or soil.
Acaricide - ANSWER A chemical used to control mites and ticks. A miticide is a type of
acaricide.
Acetylcholine - ANSWER Major chemical responsible for the transmission of nerve
stimuli across the synapse of two neurons or the muscle.
Activated Charcoal - ANSWER Charcoal which when finely ground absorbs liquids and
gases.
Activator - ANSWER An adjuvant added to a pesticide to increase its toxicity.
Active Ingredient - ANSWER The chemical or chemicals in a product responsible for
pesticidal activity.
Acute Effects - ANSWER The harmful effects that occur from a single exposure to a
pesticide by any route of entry.
Acute Toxicity - ANSWER The capability of a pesticide to inflict injury from a single dose.
LD50 and LC are two general ways of expressing the degree of acute toxicity. (See
Chronic Toxicity)
Adherence - ANSWER The property of a chemical that tends to stick to a target surface.
,Adjuvant - ANSWER A chemical which is added to a pesticide formulation to improve its
effectiveness, safety, or both. Synonymous with additive. Examples include: penetrants,
spreader-stickers, wetting agents.
Adsorption - ANSWER The process by which chemicals are held or bound to a surface
by physical or chemical attraction. Clay and high organic soils tend to adsorb
pesticides.
Adulterated Pesticide - ANSWER A pesticide that does not conform to the professed
standard or quality as documented on its label or labeling.
Aerosol - ANSWER A material stored in a container under pressure. When the material,
dissolved in liquid is released into the air from the pressurized container, an extremely
fine mist is produced.
Agitation - ANSWER The process of stirring or mixing in a sprayer.
Air-Purifying Respirators - ANSWER A type of protection from pesticides that uses
physical and chemical filters to trap and remove contaminants as they pass through the
device before breathed by the wearer. They may be powered or non-powered.
Air-Supplying Respirators - ANSWER A type of protection from pesticides that provide
clean, uncontaminated air from an outside source.
Algae - ANSWER Relatively simple plants that contain chlorophyll and are
photosynthetic.
Algaecide (Algicide) - ANSWER A pesticide use to kill or inhibit algae.
Antagonism - ANSWER The reduction of pesticide activity when two or more different
pesticides are mixed together.
,Antibiotic - ANSWER A microorganism-produced chemical that is toxic to other
microorganisms. Examples are streptomycin, cycloheximide, and penicillin.
Anticoagulant - ANSWER A chemical that prevents normal bloodclotting. The active
ingredient in some rodenticides.
Antidote - ANSWER A practical treatment used to contract the effects of pesticide
poisoning or some other poison in the body.
Anti-Siphoning Device - ANSWER A hose attachment designed to prevent back flow into
a water source. Used to prevent the flow of pesticide mixes from spray tanks.
Anti-Transpirant - ANSWER A chemical applied to a plant to reduce the rate of
transpiration or water loss.
Aquifer - ANSWER A permeable zone of rock, sand, gravel, or limestone below the
earths surface saturated with water.
Arachnid - ANSWER A wingless arthropod with two body regions and four pairs of joined
legs. Examples are spiders, ticks, and mites.
Arthropod - ANSWER An invertebrate animal characterized by a jointed body and limbs
usually a hard body covering that is molted at intervals. Examples are insects, mites,
and crayfish.
Atropine (Atropine Sulfate) - ANSWER An antidote used to treat organophosphate and
carbamate poisoning.
Attractant - ANSWER A substance or device to lure insects or other pests to a trap or
poison bait.
, Avicide - ANSWER A chemical used to kill or repel birds.
Bacteria - ANSWER Microscopic organisms, some of which are capable of producing
diseases in plants and animals.
Bactericide - ANSWER A chemical used to control bacteria.
Bait - ANSWER A food or other substance used to attract a pest to a pesticide or trap
where it is destroyed.
Band Application - ANSWER Application of a pesticide or other material in or beside a
crop row rather than over the entire field. (See Broadcast Application)
Basal Application - ANSWER Application to the plant stems or trunks at or just above
ground.
Beneficial Insect - ANSWER An insect that is useful or helpful to humans. Examples are
pollinators, parasites, and predators of pest.
Biennial - ANSWER A plant that completes its life cycle in two years.
Biological Control - ANSWER A pest management strategy that uses predators,
parasites, and diseases-causing organisms. May be naturally occurring or introduced.
Biomagnification - ANSWER The process whereby some organisms accumulate
chemical residues in higher concentrates than those found in the organisms they
consume.
Botanical Pesticide - ANSWER A pesticide produced from chemicals found in plants.
Examples are nicotine, pyrethrum, and strychnine.
Solutions Latest Update
Absorption - ANSWER The uptake of chemical into plants, animals (including humans),
microorganisms, or soil.
Acaricide - ANSWER A chemical used to control mites and ticks. A miticide is a type of
acaricide.
Acetylcholine - ANSWER Major chemical responsible for the transmission of nerve
stimuli across the synapse of two neurons or the muscle.
Activated Charcoal - ANSWER Charcoal which when finely ground absorbs liquids and
gases.
Activator - ANSWER An adjuvant added to a pesticide to increase its toxicity.
Active Ingredient - ANSWER The chemical or chemicals in a product responsible for
pesticidal activity.
Acute Effects - ANSWER The harmful effects that occur from a single exposure to a
pesticide by any route of entry.
Acute Toxicity - ANSWER The capability of a pesticide to inflict injury from a single dose.
LD50 and LC are two general ways of expressing the degree of acute toxicity. (See
Chronic Toxicity)
Adherence - ANSWER The property of a chemical that tends to stick to a target surface.
,Adjuvant - ANSWER A chemical which is added to a pesticide formulation to improve its
effectiveness, safety, or both. Synonymous with additive. Examples include: penetrants,
spreader-stickers, wetting agents.
Adsorption - ANSWER The process by which chemicals are held or bound to a surface
by physical or chemical attraction. Clay and high organic soils tend to adsorb
pesticides.
Adulterated Pesticide - ANSWER A pesticide that does not conform to the professed
standard or quality as documented on its label or labeling.
Aerosol - ANSWER A material stored in a container under pressure. When the material,
dissolved in liquid is released into the air from the pressurized container, an extremely
fine mist is produced.
Agitation - ANSWER The process of stirring or mixing in a sprayer.
Air-Purifying Respirators - ANSWER A type of protection from pesticides that uses
physical and chemical filters to trap and remove contaminants as they pass through the
device before breathed by the wearer. They may be powered or non-powered.
Air-Supplying Respirators - ANSWER A type of protection from pesticides that provide
clean, uncontaminated air from an outside source.
Algae - ANSWER Relatively simple plants that contain chlorophyll and are
photosynthetic.
Algaecide (Algicide) - ANSWER A pesticide use to kill or inhibit algae.
Antagonism - ANSWER The reduction of pesticide activity when two or more different
pesticides are mixed together.
,Antibiotic - ANSWER A microorganism-produced chemical that is toxic to other
microorganisms. Examples are streptomycin, cycloheximide, and penicillin.
Anticoagulant - ANSWER A chemical that prevents normal bloodclotting. The active
ingredient in some rodenticides.
Antidote - ANSWER A practical treatment used to contract the effects of pesticide
poisoning or some other poison in the body.
Anti-Siphoning Device - ANSWER A hose attachment designed to prevent back flow into
a water source. Used to prevent the flow of pesticide mixes from spray tanks.
Anti-Transpirant - ANSWER A chemical applied to a plant to reduce the rate of
transpiration or water loss.
Aquifer - ANSWER A permeable zone of rock, sand, gravel, or limestone below the
earths surface saturated with water.
Arachnid - ANSWER A wingless arthropod with two body regions and four pairs of joined
legs. Examples are spiders, ticks, and mites.
Arthropod - ANSWER An invertebrate animal characterized by a jointed body and limbs
usually a hard body covering that is molted at intervals. Examples are insects, mites,
and crayfish.
Atropine (Atropine Sulfate) - ANSWER An antidote used to treat organophosphate and
carbamate poisoning.
Attractant - ANSWER A substance or device to lure insects or other pests to a trap or
poison bait.
, Avicide - ANSWER A chemical used to kill or repel birds.
Bacteria - ANSWER Microscopic organisms, some of which are capable of producing
diseases in plants and animals.
Bactericide - ANSWER A chemical used to control bacteria.
Bait - ANSWER A food or other substance used to attract a pest to a pesticide or trap
where it is destroyed.
Band Application - ANSWER Application of a pesticide or other material in or beside a
crop row rather than over the entire field. (See Broadcast Application)
Basal Application - ANSWER Application to the plant stems or trunks at or just above
ground.
Beneficial Insect - ANSWER An insect that is useful or helpful to humans. Examples are
pollinators, parasites, and predators of pest.
Biennial - ANSWER A plant that completes its life cycle in two years.
Biological Control - ANSWER A pest management strategy that uses predators,
parasites, and diseases-causing organisms. May be naturally occurring or introduced.
Biomagnification - ANSWER The process whereby some organisms accumulate
chemical residues in higher concentrates than those found in the organisms they
consume.
Botanical Pesticide - ANSWER A pesticide produced from chemicals found in plants.
Examples are nicotine, pyrethrum, and strychnine.
