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MI Aquatic Pest Management Exam 2025
|Real Exam Questions With Answers
Why is it necessary to understand aquatic plant responses to temperature
changes?-correct answer-So that the life stages can be predicted and identified,
which allows applicators to apply management treatments at the correct time in
the pest's life cycle for most effective control.
Which of these statements is false?
a. Sand is a poor substrate in flowing waters or along shorelines.
b. Silt and clay are poor substrates in protected areas because they are nutrient
poor.
c. Rock and large gravel substrates do not promote rooted plant growth.
d. Shallow areas with gradually sloping bottoms are prime locations for weed
infestations.-correct answer-b. Silt and clay are poor substrates in protected areas
because they are nutrient poor.
Simple plants without true roots, leaves, or flowers; reproduce by cell division,
plant fragmentation, or spores.-correct answer-Algae
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Plants that grow completely below the water surface and depend on the
surrounding water for support of the plant body.-correct answer-submersed
plants
Plants that are rooted in the sediments, extend above the water surface, and are
self-supporting.-correct answer-Emersed or emergent plants
Plants that are not attached to the sediments and float on the water surface or
just below it. Most have roots that extend into the water for nutrient uptake.-
correct answer-Free-floating plants
Plants that are attached to the sediment and have leaves that float on the water
surface; they may or may not be self-supporting-correct answer-Rooted floating
plants
Watermilfoil-correct answer--submersed plant
-grow at the surface and may have small flower stalks that extend above water
surface
-most are native, but Eurasian watermilfoil is exotic and problematic
-reproduce mainly by fragmentation and stolons
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-Controlled by selective herbicides, contact herbicides and harvesting are not
recommended
Pondweeds-correct answer--Submersed plant
-Most are beneficial natives, but curly-leaf pondweed is exception
-Spreads by re-rooting of fragments
-Can overwinter under ice cover, and leaf structures can lie dormant in substrates
for years
-Most important waterfowl food in U.S.
Naiads-correct answer--Submersed plant
-Desirable when low-growing lake bottom covers, but nuisance when they grow to
the surface and create impenetrable masses of vegetation
-Annuals that overwinter as a seed
Submersed plant species-correct answer--Watermilfoil
-Pondweeds
-Naiads
-Coontail
-Wild celery or tape (eel) grass
-Elodea or waterweed
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-Hydrilla - not native
Free-floating plants-correct answer-Duckweed and Watermeal
-obtain nutrients directly from water
small, green, floating, oval, may have roots on underside-correct answer-
Duckweed
smallest flowering plants, granular in size, no root extending from underside,
often mistaken as seeds-correct answer-Watermeal
Rooted Floating Plants-correct answer--Waterlilies or lily pads
-Watershield
-American lotus
Emergent Plants-correct answer--Cattails
-Purple loosestrife
MI Aquatic Pest Management Exam 2025
|Real Exam Questions With Answers
Why is it necessary to understand aquatic plant responses to temperature
changes?-correct answer-So that the life stages can be predicted and identified,
which allows applicators to apply management treatments at the correct time in
the pest's life cycle for most effective control.
Which of these statements is false?
a. Sand is a poor substrate in flowing waters or along shorelines.
b. Silt and clay are poor substrates in protected areas because they are nutrient
poor.
c. Rock and large gravel substrates do not promote rooted plant growth.
d. Shallow areas with gradually sloping bottoms are prime locations for weed
infestations.-correct answer-b. Silt and clay are poor substrates in protected areas
because they are nutrient poor.
Simple plants without true roots, leaves, or flowers; reproduce by cell division,
plant fragmentation, or spores.-correct answer-Algae
,2|Page
Plants that grow completely below the water surface and depend on the
surrounding water for support of the plant body.-correct answer-submersed
plants
Plants that are rooted in the sediments, extend above the water surface, and are
self-supporting.-correct answer-Emersed or emergent plants
Plants that are not attached to the sediments and float on the water surface or
just below it. Most have roots that extend into the water for nutrient uptake.-
correct answer-Free-floating plants
Plants that are attached to the sediment and have leaves that float on the water
surface; they may or may not be self-supporting-correct answer-Rooted floating
plants
Watermilfoil-correct answer--submersed plant
-grow at the surface and may have small flower stalks that extend above water
surface
-most are native, but Eurasian watermilfoil is exotic and problematic
-reproduce mainly by fragmentation and stolons
,3|Page
-Controlled by selective herbicides, contact herbicides and harvesting are not
recommended
Pondweeds-correct answer--Submersed plant
-Most are beneficial natives, but curly-leaf pondweed is exception
-Spreads by re-rooting of fragments
-Can overwinter under ice cover, and leaf structures can lie dormant in substrates
for years
-Most important waterfowl food in U.S.
Naiads-correct answer--Submersed plant
-Desirable when low-growing lake bottom covers, but nuisance when they grow to
the surface and create impenetrable masses of vegetation
-Annuals that overwinter as a seed
Submersed plant species-correct answer--Watermilfoil
-Pondweeds
-Naiads
-Coontail
-Wild celery or tape (eel) grass
-Elodea or waterweed
, 4|Page
-Hydrilla - not native
Free-floating plants-correct answer-Duckweed and Watermeal
-obtain nutrients directly from water
small, green, floating, oval, may have roots on underside-correct answer-
Duckweed
smallest flowering plants, granular in size, no root extending from underside,
often mistaken as seeds-correct answer-Watermeal
Rooted Floating Plants-correct answer--Waterlilies or lily pads
-Watershield
-American lotus
Emergent Plants-correct answer--Cattails
-Purple loosestrife
