STUDYSAGE
Virginia Commercial Pesticide
Applicators CORE exam|complete
study guide with detailed questions
and 100% verified answers.\ALREADY
GRADED AN A+
Explain the difference between key pests, occasional pests and secondary pests -
correct answer✔️✔️Key pests are nearly always present and require regular
control. occasional pests are migratory or cyclical and require intermittent
control. secondary pests require control only under certain conditions, such as
the elimination of a key pest or the absence of a natural host.
what should you do first if you see damage to a plant, animal, or valuable
product/ - correct answer✔️✔️identify the cause
what should you do first if you discover a pest that may need to be controlled? -
correct answer✔️✔️make sure the pest is actually responsible for the damage.
then accurately identify the pest
how can pest identification help you develop a good pest control strategy? -
correct answer✔️✔️it allows you to determine basic information about the pest,
including its life-cycle and when it is most susceptible to control measures.
name the 5 basic pest groups - correct answer✔️✔️weeds, parasites and
diseases, mollusks, arthropods, and vertebrates.
why do weeds present such a challenge to pest managers? - correct
answer✔️✔️weeds are often hardy, aggressive, and tolerant of harsh conditions.
SUCCESS
,STUDYSAGE
many produce large numbers of seeds which can spread over a wide area and
remain dormant for a long time.
how can you tell a monocot from a dicot? - correct answer✔️✔️monocots
(sedges and grasses) have one cotyledon, parallel leaf veins, flower parts in
multiples of 3 and fibrous roots. Dicots have 2 cotyledons, broad leaves with
netted veination, and flower parts in multiples of 4 and 5 and usually have
taproots.
name the pathogens that cause most plant and animal diseases - correct
answer✔️✔️fungi, bacteria, mycoplasma, and viruses
what are the symptoms of viral plant diseases - correct answer✔️✔️stunting,
yellow rings on leaves, wilting, and mosaic patterns
how do plant parasitic nematodes harm plants? - correct answer✔️✔b ️y
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 answer✔️✔️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
answer✔️✔️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
SUCCESS
, STUDYSAGE
what is the difference between gradual and complete metamorphosis? why is it
important to know the life cycle stage of an insect? - correct answer✔️✔️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
answer✔️✔️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 answer✔️✔️They suck the plant juices, eat
the underside of leaves, and disfigure the plants they feed on.
what is an economic threshold? - correct answer✔️✔️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
answer✔️✔️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
SUCCESS
Virginia Commercial Pesticide
Applicators CORE exam|complete
study guide with detailed questions
and 100% verified answers.\ALREADY
GRADED AN A+
Explain the difference between key pests, occasional pests and secondary pests -
correct answer✔️✔️Key pests are nearly always present and require regular
control. occasional pests are migratory or cyclical and require intermittent
control. secondary pests require control only under certain conditions, such as
the elimination of a key pest or the absence of a natural host.
what should you do first if you see damage to a plant, animal, or valuable
product/ - correct answer✔️✔️identify the cause
what should you do first if you discover a pest that may need to be controlled? -
correct answer✔️✔️make sure the pest is actually responsible for the damage.
then accurately identify the pest
how can pest identification help you develop a good pest control strategy? -
correct answer✔️✔️it allows you to determine basic information about the pest,
including its life-cycle and when it is most susceptible to control measures.
name the 5 basic pest groups - correct answer✔️✔️weeds, parasites and
diseases, mollusks, arthropods, and vertebrates.
why do weeds present such a challenge to pest managers? - correct
answer✔️✔️weeds are often hardy, aggressive, and tolerant of harsh conditions.
SUCCESS
,STUDYSAGE
many produce large numbers of seeds which can spread over a wide area and
remain dormant for a long time.
how can you tell a monocot from a dicot? - correct answer✔️✔️monocots
(sedges and grasses) have one cotyledon, parallel leaf veins, flower parts in
multiples of 3 and fibrous roots. Dicots have 2 cotyledons, broad leaves with
netted veination, and flower parts in multiples of 4 and 5 and usually have
taproots.
name the pathogens that cause most plant and animal diseases - correct
answer✔️✔️fungi, bacteria, mycoplasma, and viruses
what are the symptoms of viral plant diseases - correct answer✔️✔️stunting,
yellow rings on leaves, wilting, and mosaic patterns
how do plant parasitic nematodes harm plants? - correct answer✔️✔b ️y
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 answer✔️✔️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
answer✔️✔️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
SUCCESS
, STUDYSAGE
what is the difference between gradual and complete metamorphosis? why is it
important to know the life cycle stage of an insect? - correct answer✔️✔️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
answer✔️✔️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 answer✔️✔️They suck the plant juices, eat
the underside of leaves, and disfigure the plants they feed on.
what is an economic threshold? - correct answer✔️✔️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
answer✔️✔️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
SUCCESS
