VIRGINIA COMMERCIAL PESTICIDE APPLICATORS CORE EXAM
2025/2026 | ACCURATE REAL EXAM QUESTIONS & VERIFIED
ANSWERS | 100% CORRECT | A+ GRADED | LATEST UPDATED EDITION
what is physical control and how can it be used to manage certain pests? - CORRECT
ANSWERS-changing certain environmental conditions such as water, air movement, temperature,
light and humidity. such changes can control or even eradicate pests.
name 5 important qualities to consider when choosing a pesticide. - CORRECT ANSWERS-
efficacy, persistence, mobility, toxicity, and mode of action
what is the difference between selective and non selective herbicides? - CORRECT ANSWERS-
a selective herbicide controls some plants and not others (ex. sethoxydim only controls grasses and not
broadleaf)
non selective controls all types of plants.
what is the difference between residual and non residual pesticides? - CORRECT ANSWERS-
nonresidual pesticides break down quickly into nontoxic by-products. a residual pesticide may remain
active for weeks, months, or even years
define pesticide resistance - CORRECT ANSWERS-the ability of a pest population that is
repeatedly exposed to a given pesticide to resist and survive its effects. an insect population, for
example, often has "abnormal" members that can tolerate exposure to insecticide doses that kill
"normal" members. Each time the same MOA is used, the susceptible members die, and the resistant
members survive and breed. in time most of the members will be resistant to the insecticide.
what are the symptoms of viral plant diseases - CORRECT ANSWERS-stunting, yellow rings on
leaves, wilting, and mosaic patterns
how do plant parasitic nematodes harm plants? - CORRECT ANSWERS-by attacking the roots,
stems and leaves. nematode root feeding interferes with a plants ability to take up water and nutrients.
infected plants wilt and seem to be suffering from a lack of water or nutrients.
, how do mollusks harm plants? - CORRECT ANSWERS-by feeding on foliage and fruit. mollusks
reduce the value of commercial produce if they feed on harvested plants and fruit.
what are arthropods? how do they differ from vertebrates? - CORRECT ANSWERS-arthropods
are animals with segmented bodies and jointed appendages. Arthropods have an external skeleton and
may have specialized appendages such as sucking tubes, chewing mouth parts, antennae, and pincers.
they have no backbones like vertebrates
what is the difference between gradual and complete metamorphosis? why is it important to know the
life cycle stage of an insect? - CORRECT ANSWERS-gradual metamorphosis includes 3 stages:
egg, nymph and adult. there is no pupa stage. complete metamorphosis includes 4 stages: egg, larva,
pupa, and adult. insects that develop via complete metamorphosis change body form. larvae may not
look at all like adults within the same species.it is very important to recognize the damaging stage for
best treatment results. many insect are pests in one stage but not another. especially larval form.
what are beneficial insects? and why are they important to agriculture? - CORRECT
ANSWERS-insects that are pollinators (bees and butterflies) or pest predators (ladybeetles and
lacewings). with out pollinators many types of plants could not reproduce and beneficial predators feed
on harmful insects, mites, and weeds.
how do mites harm plants? - CORRECT ANSWERS-They suck the plant juices, eat the
underside of leaves, and disfigure the plants they feed on.
what is an economic threshold? - CORRECT ANSWERS-the level at which economic losses
caused by pest damage, if the pest population continued to grow, would be greater than the cost of
controlling the pests. reaching an economic threshold usually prompts some kind of pest control action.
how are thresholds important to a sound pest control strategy? - CORRECT ANSWERS-setting
a treatment or action threshold is essential to prevent the pests in an area from causing unacceptable
injury or harm. action thresholds vary: sometimes one pest is too many (like a rat in a food processing
facility). Thresholds help producers and applicators weigh the cost of pest control against the cost of a
pest infestation
what is monitoring and how is it important to a sound pest control strategy? - CORRECT
ANSWERS-regular checking or scouting for pests in a designated area. Monitoring will tell you what
2025/2026 | ACCURATE REAL EXAM QUESTIONS & VERIFIED
ANSWERS | 100% CORRECT | A+ GRADED | LATEST UPDATED EDITION
what is physical control and how can it be used to manage certain pests? - CORRECT
ANSWERS-changing certain environmental conditions such as water, air movement, temperature,
light and humidity. such changes can control or even eradicate pests.
name 5 important qualities to consider when choosing a pesticide. - CORRECT ANSWERS-
efficacy, persistence, mobility, toxicity, and mode of action
what is the difference between selective and non selective herbicides? - CORRECT ANSWERS-
a selective herbicide controls some plants and not others (ex. sethoxydim only controls grasses and not
broadleaf)
non selective controls all types of plants.
what is the difference between residual and non residual pesticides? - CORRECT ANSWERS-
nonresidual pesticides break down quickly into nontoxic by-products. a residual pesticide may remain
active for weeks, months, or even years
define pesticide resistance - CORRECT ANSWERS-the ability of a pest population that is
repeatedly exposed to a given pesticide to resist and survive its effects. an insect population, for
example, often has "abnormal" members that can tolerate exposure to insecticide doses that kill
"normal" members. Each time the same MOA is used, the susceptible members die, and the resistant
members survive and breed. in time most of the members will be resistant to the insecticide.
what are the symptoms of viral plant diseases - CORRECT ANSWERS-stunting, yellow rings on
leaves, wilting, and mosaic patterns
how do plant parasitic nematodes harm plants? - CORRECT ANSWERS-by attacking the roots,
stems and leaves. nematode root feeding interferes with a plants ability to take up water and nutrients.
infected plants wilt and seem to be suffering from a lack of water or nutrients.
, how do mollusks harm plants? - CORRECT ANSWERS-by feeding on foliage and fruit. mollusks
reduce the value of commercial produce if they feed on harvested plants and fruit.
what are arthropods? how do they differ from vertebrates? - CORRECT ANSWERS-arthropods
are animals with segmented bodies and jointed appendages. Arthropods have an external skeleton and
may have specialized appendages such as sucking tubes, chewing mouth parts, antennae, and pincers.
they have no backbones like vertebrates
what is the difference between gradual and complete metamorphosis? why is it important to know the
life cycle stage of an insect? - CORRECT ANSWERS-gradual metamorphosis includes 3 stages:
egg, nymph and adult. there is no pupa stage. complete metamorphosis includes 4 stages: egg, larva,
pupa, and adult. insects that develop via complete metamorphosis change body form. larvae may not
look at all like adults within the same species.it is very important to recognize the damaging stage for
best treatment results. many insect are pests in one stage but not another. especially larval form.
what are beneficial insects? and why are they important to agriculture? - CORRECT
ANSWERS-insects that are pollinators (bees and butterflies) or pest predators (ladybeetles and
lacewings). with out pollinators many types of plants could not reproduce and beneficial predators feed
on harmful insects, mites, and weeds.
how do mites harm plants? - CORRECT ANSWERS-They suck the plant juices, eat the
underside of leaves, and disfigure the plants they feed on.
what is an economic threshold? - CORRECT ANSWERS-the level at which economic losses
caused by pest damage, if the pest population continued to grow, would be greater than the cost of
controlling the pests. reaching an economic threshold usually prompts some kind of pest control action.
how are thresholds important to a sound pest control strategy? - CORRECT ANSWERS-setting
a treatment or action threshold is essential to prevent the pests in an area from causing unacceptable
injury or harm. action thresholds vary: sometimes one pest is too many (like a rat in a food processing
facility). Thresholds help producers and applicators weigh the cost of pest control against the cost of a
pest infestation
what is monitoring and how is it important to a sound pest control strategy? - CORRECT
ANSWERS-regular checking or scouting for pests in a designated area. Monitoring will tell you what
