MDARD COMMERCIAL PESTICIDE APPLICATOR 2025
QUESTIONS WITH ANSWERS RATED A+
✔✔Dominant fish species in waters where phytoplankton and rooted plant production
are low - ✔✔Trout, salmon
✔✔Temperature is an important factor in determining what characteristics of aquatic
plants? - ✔✔Life cycle
✔✔How do algae reproduce? (3) - ✔✔1. Cell division
2. Plant fragmentation
3. Spores
✔✔Individual algae cells that are suspended on the surface of the water or form a film -
✔✔Planktonic algae
✔✔Large amounts of decomposing plants can ___________ the dissolved oxygen level
in a body of water - ✔✔lower
✔✔Groups of filamentous algae (2) - ✔✔1. Attached
2. Planktonic (free-floating)
✔✔Algae that form dense mats and have a slimy or coarse texture - ✔✔Filamentous
algae
✔✔Algae that resembles vascular plants and aid in the prevention of other nuisance
algae from growing - ✔✔Erect algae
✔✔Plant type that grows completely underwater - ✔✔Submersed
✔✔Aquatic plant type that is rooted in sediment and extends above the water surface -
✔✔Emersed / emergent
✔✔Aquatic plant type that is not attached to sediment and floats on or just below the
water surface - ✔✔Free-floating
✔✔Aquatic plant type that's attached to sediment and has leaves that float on the water
surface - ✔✔Rooted-floating
✔✔Watermilfoil main reproduction technique - ✔✔Fragmentation
✔✔Curly-leaf pondweed main reproduction technique - ✔✔Rhizomes and turions
, ✔✔Which invasive plant has pesticide-resistant reproductive structures that can lay
dormant in substrate only to sprout when conditions are right? - ✔✔Curly-leaf
pondweed
✔✔Which plant can be desirable in lake bottoms, but nuisance when they grow to the
surface? - ✔✔Naiad
✔✔Naiad main reproduction technique - ✔✔Seed (annual) but also by fragmentation
✔✔What necessary and beneficial roles do native plants fulfill in their aquatic
ecosystem? (3) - ✔✔1. Provide food, habitat or shelter
2. As stabilizing features of the substrate
3. Filter storm and runoff water
✔✔Dormant leaf structures that are not affected by herbicides and are used primarily for
reproduction in the curly-leaf pondweed - ✔✔Turions
✔✔The process of adding nutrients to a body of water that in turn increases the
production of plants and algae - ✔✔Eutrophication
✔✔Nutrient of highest concern in regards to eutrophication - ✔✔Phosphorus (nitrogen
second)
✔✔Ways carbon can enter the water (2) - ✔✔1. Atmosphere in the form of CO2
2. In the water as dissolved bicarbonate compounds (HCO3)
✔✔Cultural technique used to control weeds by draining the water level to expose
weeds - ✔✔Winter drawdown
✔✔True or false: All native aquatic plants benefit from winter drawdowns - ✔✔False
✔✔Cultural technique used to cover bottom sediments with material - ✔✔Benthic
Barriers
✔✔What color dye should be used to act as a light screen for plants? - ✔✔Blue (plants
absorb blue light for photosythesis)
✔✔Aeration may control ________ but does not affect ________ - ✔✔algae,
macrophytes
✔✔Two most notable species introduced to biologically control aquatic weeds in
Michigan (but is strictly prohibited now) - ✔✔tilapia, grass carp
QUESTIONS WITH ANSWERS RATED A+
✔✔Dominant fish species in waters where phytoplankton and rooted plant production
are low - ✔✔Trout, salmon
✔✔Temperature is an important factor in determining what characteristics of aquatic
plants? - ✔✔Life cycle
✔✔How do algae reproduce? (3) - ✔✔1. Cell division
2. Plant fragmentation
3. Spores
✔✔Individual algae cells that are suspended on the surface of the water or form a film -
✔✔Planktonic algae
✔✔Large amounts of decomposing plants can ___________ the dissolved oxygen level
in a body of water - ✔✔lower
✔✔Groups of filamentous algae (2) - ✔✔1. Attached
2. Planktonic (free-floating)
✔✔Algae that form dense mats and have a slimy or coarse texture - ✔✔Filamentous
algae
✔✔Algae that resembles vascular plants and aid in the prevention of other nuisance
algae from growing - ✔✔Erect algae
✔✔Plant type that grows completely underwater - ✔✔Submersed
✔✔Aquatic plant type that is rooted in sediment and extends above the water surface -
✔✔Emersed / emergent
✔✔Aquatic plant type that is not attached to sediment and floats on or just below the
water surface - ✔✔Free-floating
✔✔Aquatic plant type that's attached to sediment and has leaves that float on the water
surface - ✔✔Rooted-floating
✔✔Watermilfoil main reproduction technique - ✔✔Fragmentation
✔✔Curly-leaf pondweed main reproduction technique - ✔✔Rhizomes and turions
, ✔✔Which invasive plant has pesticide-resistant reproductive structures that can lay
dormant in substrate only to sprout when conditions are right? - ✔✔Curly-leaf
pondweed
✔✔Which plant can be desirable in lake bottoms, but nuisance when they grow to the
surface? - ✔✔Naiad
✔✔Naiad main reproduction technique - ✔✔Seed (annual) but also by fragmentation
✔✔What necessary and beneficial roles do native plants fulfill in their aquatic
ecosystem? (3) - ✔✔1. Provide food, habitat or shelter
2. As stabilizing features of the substrate
3. Filter storm and runoff water
✔✔Dormant leaf structures that are not affected by herbicides and are used primarily for
reproduction in the curly-leaf pondweed - ✔✔Turions
✔✔The process of adding nutrients to a body of water that in turn increases the
production of plants and algae - ✔✔Eutrophication
✔✔Nutrient of highest concern in regards to eutrophication - ✔✔Phosphorus (nitrogen
second)
✔✔Ways carbon can enter the water (2) - ✔✔1. Atmosphere in the form of CO2
2. In the water as dissolved bicarbonate compounds (HCO3)
✔✔Cultural technique used to control weeds by draining the water level to expose
weeds - ✔✔Winter drawdown
✔✔True or false: All native aquatic plants benefit from winter drawdowns - ✔✔False
✔✔Cultural technique used to cover bottom sediments with material - ✔✔Benthic
Barriers
✔✔What color dye should be used to act as a light screen for plants? - ✔✔Blue (plants
absorb blue light for photosythesis)
✔✔Aeration may control ________ but does not affect ________ - ✔✔algae,
macrophytes
✔✔Two most notable species introduced to biologically control aquatic weeds in
Michigan (but is strictly prohibited now) - ✔✔tilapia, grass carp
