Virginia Commercial Pesticide Applicators
CORE exam Questions and Correct
Answers| Guaranteed Pass
Explain the difference between key pests, occasional pests and secondary pests
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/
identify the cause
what should you do first if you discover a pest that may need to be controlled?
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?
,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
weeds, parasites and diseases, mollusks, arthropods, and vertebrates.
why do weeds present such a challenge to pest managers?
weeds are often hardy, aggressive, and tolerant of harsh conditions. 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?
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 venation, and flower parts in multiples of 4 and 5 and usually have
taproots.
name the pathogens that cause most plant and animal diseases
fungi, bacteria, mycoplasma, and viruses
what are the symptoms of viral plant diseases
stunting, yellow rings on leaves, wilting, and mosaic patterns
, how do plant parasitic nematodes harm plants?
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?
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?
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?
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?
CORE exam Questions and Correct
Answers| Guaranteed Pass
Explain the difference between key pests, occasional pests and secondary pests
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/
identify the cause
what should you do first if you discover a pest that may need to be controlled?
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?
,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
weeds, parasites and diseases, mollusks, arthropods, and vertebrates.
why do weeds present such a challenge to pest managers?
weeds are often hardy, aggressive, and tolerant of harsh conditions. 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?
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 venation, and flower parts in multiples of 4 and 5 and usually have
taproots.
name the pathogens that cause most plant and animal diseases
fungi, bacteria, mycoplasma, and viruses
what are the symptoms of viral plant diseases
stunting, yellow rings on leaves, wilting, and mosaic patterns
, how do plant parasitic nematodes harm plants?
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?
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?
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?
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?
