3OT exam questions with correct solutions

3OT exam questions 2025-2026 with correct
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solutions

Define integrated pest management (ipm) - CORRECT ANSWERS
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✔✔a system that uses all available and suitable pest control
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tactics to reduce pest populations to tolerable levels while
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minimizing adverse environment side effects. |\ |\ |\ |\




|\ Seeks to replace chemical eradication practices.
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Most effective to pests
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Explain how aesthetic thresholds affect IPM tactics - CORRECT
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ANSWERS ✔✔(DEF) Damage level that is unacceptable to the
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viewer |\




Based on tolerance, personal comfort, taste, plant appearance,
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and specific site & environmental conditions
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(EX) Landscape plantings can tolerate low-level pest populations,
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but nurseries that must sell only pest-free plants can allow only
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very low injured levels
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Healthy=higher threshold |\

,Explain how IPM can reduce the use of pesticide - CORRECT
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ANSWERS ✔✔In IPM, pesticides are used only when needed and
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in combination with other approaches for more effective, long-
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term control. Pesticides are selected and applied in a way that
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minimizes their possible harm to people, non-target organisms,
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and the environment
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List the 6 control strategies - CORRECT ANSWERS ✔✔Cultural:
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modifying the environment |\ |\




Mechanical: physical means like fences, weeding |\ |\ |\ |\ |\




Host Resistance: the use of resistant crops verities
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Biological: Natural enemies, ladybugs |\ |\ |\




Regulatory: monitoring, trapping, eradication |\ |\ |\




Chemical Process: kill the pests or inhibit their development
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Define Pesticide - CORRECT ANSWERS ✔✔any material used to
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kill, attract, repel, regulate, or interrupt growth and mating of
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pests, or to regulate plant growth
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Compare contact and systemic pesticides - CORRECT ANSWERS
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✔✔Contact: must physically touch the pest organism or be |\ |\ |\ |\ |\ |\ |\ |\ |\


sprayed on the site the pest frequents to exert action. Must be
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re-applied to new plant tissues or if precipitation washes the
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product off |\




Systemic: Enters the plant via the roots or above ground plant
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tissues and is moved inside the plant. Renders the plant toxic to
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an insect feeding on it. Sometimes called a curative. Remain in
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, the plant tell dead (herbicides) or for several days, weeks, or
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months (insecticide, fungicide) |\ |\




Compare preemergence and postemergence herbicides -
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CORRECT ANSWERS ✔✔PRE: Applied prior to weed seed |\ |\ |\ |\ |\ |\ |\ |\


germination
POST: Applied to weeds that are actively growing
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Distinguish between selective and nonselective pesticides -
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CORRECT ANSWERS ✔✔Selective: will control only certain types
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or stages of pests while leaving nontarget organisms unaffected
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(EX) bacterial insecticides that only kill the immature stages of
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moths or selective herbicides that control only broadleaf weeds
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and can be sprayed on a turf grass area
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Identify the best application timing for effective pest control -
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CORRECT ANSWERS ✔✔Plant diseases: before any infection
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begins or at first appearance (oak wilt, scab on apples)
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Insects: the younger the insect stage the more susceptible it is to
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chemical control. Should target the stages for damages
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Weeds: actively growing plants. Annual weeds easiest to control
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early spring while still small. Biennials in the rosette stage (wild
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parsnip)


Explain how pesticide resistance develops in a pest population -
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CORRECT ANSWERS ✔✔It is an inherited trait that results from
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