Washington Pesticide Test Questions and
Answers Graded A+
Weed - Correct answer-Undesirable plant that becomes a hazard, nuisance, causes
injury to us, our animals, or cultivated crop. Competes for light, nutrients, and
water.
Integrated Weed Management (IWM) - Correct answer-Management plan that
draws from more than one method of weed control (prevention, mechanical,
cultural, chemical, biological).
Native Weeds - Correct answer-Are plants that have native origins in the area and
were not introduced here by human activities. Natural enemies, competition, and
the environment help keep them in check.
Introduced Plants - Correct answer-Came from other parts of the country or world
through human activities, animal movements, and water flow.
Weed Dispersal - Correct answer-Primarily completed by wind, water, animals,
and humans.
Grasses - Correct answer-- Have only 1 seed leaf
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,- Leaves are narrow and upright
- Leaf veins run parallel to leaf margins
- Have fine fibrous roots that branch
Broadleaves - Correct answer-- Have 2 seed leaves
- Plants shrubs, trees
- Leaves are generally broad with netlike veins
- Root system is coarse often with strong taproot
- May be herbaceous with no woody tissue
Annuals - Correct answer-Complete their life cycle in less than a year or 12 months
and are normally easiest to control.
Biennial - Correct answer-Plant completes life cycle within two years. In first year
plant forms basal leaves and a tap root. Second year the plant flowers, matures,
then dies.
Perennials - Correct answer-Plants that live for more than two years with some
living indefinitely, resprouting from vegetative plant parts. Can be difficult to
control due to persistent resprouting from roots, rhizomes, stolons, tubers, plant
fragments, etc.
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, Simple Perennial - Correct answer-A recurring plant that lives for multiple years,
and reproduces by seeds.
Creeping Perennial - Correct answer-Reproduce by creeping roots, creeping above
ground stems (stolons) or creeping below ground stems (rhizomes). They can
reproduce by seed.
Prevention - Correct answer-The best way to manage weeds is by keeping them out
of fields and rangelands. Carefully watch crop seed, water, feed, manure,
machinery etc.
Mechanical Control - Correct answer-Oldest method of weed control including
cultivation, hand-pulling, hoeing, blading, grubbing, mowing, burning, flooding,
and mulching.
Cultural Control - Correct answer-Uses practices common to good land and water
management to help the crop compete against weeds. Crop competition, crop
rotation, and nurse crops are fundamental methods to control.
Biological Control - Correct answer-Uses living organisms like insects, animals,
and pathogens to control weeds. The objective is to reduce weed level, not
eradicate.
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Answers Graded A+
Weed - Correct answer-Undesirable plant that becomes a hazard, nuisance, causes
injury to us, our animals, or cultivated crop. Competes for light, nutrients, and
water.
Integrated Weed Management (IWM) - Correct answer-Management plan that
draws from more than one method of weed control (prevention, mechanical,
cultural, chemical, biological).
Native Weeds - Correct answer-Are plants that have native origins in the area and
were not introduced here by human activities. Natural enemies, competition, and
the environment help keep them in check.
Introduced Plants - Correct answer-Came from other parts of the country or world
through human activities, animal movements, and water flow.
Weed Dispersal - Correct answer-Primarily completed by wind, water, animals,
and humans.
Grasses - Correct answer-- Have only 1 seed leaf
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,- Leaves are narrow and upright
- Leaf veins run parallel to leaf margins
- Have fine fibrous roots that branch
Broadleaves - Correct answer-- Have 2 seed leaves
- Plants shrubs, trees
- Leaves are generally broad with netlike veins
- Root system is coarse often with strong taproot
- May be herbaceous with no woody tissue
Annuals - Correct answer-Complete their life cycle in less than a year or 12 months
and are normally easiest to control.
Biennial - Correct answer-Plant completes life cycle within two years. In first year
plant forms basal leaves and a tap root. Second year the plant flowers, matures,
then dies.
Perennials - Correct answer-Plants that live for more than two years with some
living indefinitely, resprouting from vegetative plant parts. Can be difficult to
control due to persistent resprouting from roots, rhizomes, stolons, tubers, plant
fragments, etc.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
, Simple Perennial - Correct answer-A recurring plant that lives for multiple years,
and reproduces by seeds.
Creeping Perennial - Correct answer-Reproduce by creeping roots, creeping above
ground stems (stolons) or creeping below ground stems (rhizomes). They can
reproduce by seed.
Prevention - Correct answer-The best way to manage weeds is by keeping them out
of fields and rangelands. Carefully watch crop seed, water, feed, manure,
machinery etc.
Mechanical Control - Correct answer-Oldest method of weed control including
cultivation, hand-pulling, hoeing, blading, grubbing, mowing, burning, flooding,
and mulching.
Cultural Control - Correct answer-Uses practices common to good land and water
management to help the crop compete against weeds. Crop competition, crop
rotation, and nurse crops are fundamental methods to control.
Biological Control - Correct answer-Uses living organisms like insects, animals,
and pathogens to control weeds. The objective is to reduce weed level, not
eradicate.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
