Alabama Commercial Pesticide Applicator
Certification Category 5 Aquatic Pest Control
Practice Exam Questions And Correct Answers
(Verified Answers) Plus Rationales Q&A |
Instant Download Pdf
1. Which of the following is considered an aquatic weed?
A. Crabgrass
B. Duckweed
C. Bermuda grass
D. Clover
B. Duckweed
Duckweed is a floating aquatic plant that can rapidly cover water
surfaces, causing oxygen depletion and other ecological problems.
2. What is the primary mode of action for aquatic herbicides
containing glyphosate?
A. Photosystem II inhibition
B. EPSP synthase inhibition
, C. Cell membrane disruption
D. Inhibition of root absorption
B. EPSP synthase inhibition
Glyphosate inhibits the enzyme 5-enolpyruvylshikimate-3-phosphate
(EPSP) synthase, disrupting amino acid synthesis in plants.
3. Which environmental factor most influences the effectiveness of
aquatic herbicide application?
A. Air temperature
B. Water pH
C. Water clarity and flow
D. Soil type
C. Water clarity and flow
Herbicide efficacy is highly dependent on water movement and clarity;
turbulent or murky water can reduce contact and uptake by aquatic
plants.
4. What is the primary concern when applying herbicides near fish
hatcheries?
A. Growth of algae
B. Chemical toxicity to aquatic animals
C. Erosion of pond banks
D. Plant competition
,B. Chemical toxicity to aquatic animals
Many aquatic herbicides can be toxic to fish and invertebrates; proper
buffer zones and chemical selection are critical to prevent harm.
5. Which of the following is a floating-leaf aquatic plant?
A. Hydrilla
B. Waterlily
C. Eurasian watermilfoil
D. Coontail
B. Waterlily
Waterlilies have floating leaves and are rooted in the sediment, often
requiring different control measures than submerged plants.
6. What is the best time to apply herbicides to control submersed
aquatic weeds?
A. Early morning
B. Mid-summer during active growth
C. Late fall
D. During winter dormancy
B. Mid-summer during active growth
Aquatic weeds are most susceptible to herbicides during periods of
active growth when metabolic processes are high.
, 7. When managing algae in a pond, which chemical type is most
commonly used?
A. Systemic herbicides
B. Contact algaecides
C. Fungicides
D. Insect growth regulators
B. Contact algaecides
Contact algaecides quickly kill algae cells on contact, preventing
overgrowth in ponds and lakes.
8. What is the first step in developing an aquatic pest management
plan?
A. Purchase herbicides
B. Identify target species and site conditions
C. Apply treatment immediately
D. Stock fish
B. Identify target species and site conditions
A thorough assessment ensures the correct control method is selected,
minimizing environmental impact.
9. Which Of The Following Is A Submersed Aquatic Plant?
A. Duckweed
B. Water Hyacinth
Certification Category 5 Aquatic Pest Control
Practice Exam Questions And Correct Answers
(Verified Answers) Plus Rationales Q&A |
Instant Download Pdf
1. Which of the following is considered an aquatic weed?
A. Crabgrass
B. Duckweed
C. Bermuda grass
D. Clover
B. Duckweed
Duckweed is a floating aquatic plant that can rapidly cover water
surfaces, causing oxygen depletion and other ecological problems.
2. What is the primary mode of action for aquatic herbicides
containing glyphosate?
A. Photosystem II inhibition
B. EPSP synthase inhibition
, C. Cell membrane disruption
D. Inhibition of root absorption
B. EPSP synthase inhibition
Glyphosate inhibits the enzyme 5-enolpyruvylshikimate-3-phosphate
(EPSP) synthase, disrupting amino acid synthesis in plants.
3. Which environmental factor most influences the effectiveness of
aquatic herbicide application?
A. Air temperature
B. Water pH
C. Water clarity and flow
D. Soil type
C. Water clarity and flow
Herbicide efficacy is highly dependent on water movement and clarity;
turbulent or murky water can reduce contact and uptake by aquatic
plants.
4. What is the primary concern when applying herbicides near fish
hatcheries?
A. Growth of algae
B. Chemical toxicity to aquatic animals
C. Erosion of pond banks
D. Plant competition
,B. Chemical toxicity to aquatic animals
Many aquatic herbicides can be toxic to fish and invertebrates; proper
buffer zones and chemical selection are critical to prevent harm.
5. Which of the following is a floating-leaf aquatic plant?
A. Hydrilla
B. Waterlily
C. Eurasian watermilfoil
D. Coontail
B. Waterlily
Waterlilies have floating leaves and are rooted in the sediment, often
requiring different control measures than submerged plants.
6. What is the best time to apply herbicides to control submersed
aquatic weeds?
A. Early morning
B. Mid-summer during active growth
C. Late fall
D. During winter dormancy
B. Mid-summer during active growth
Aquatic weeds are most susceptible to herbicides during periods of
active growth when metabolic processes are high.
, 7. When managing algae in a pond, which chemical type is most
commonly used?
A. Systemic herbicides
B. Contact algaecides
C. Fungicides
D. Insect growth regulators
B. Contact algaecides
Contact algaecides quickly kill algae cells on contact, preventing
overgrowth in ponds and lakes.
8. What is the first step in developing an aquatic pest management
plan?
A. Purchase herbicides
B. Identify target species and site conditions
C. Apply treatment immediately
D. Stock fish
B. Identify target species and site conditions
A thorough assessment ensures the correct control method is selected,
minimizing environmental impact.
9. Which Of The Following Is A Submersed Aquatic Plant?
A. Duckweed
B. Water Hyacinth
