AQUATIC PESTICIDE APPLICATOR PRACTICE
PAPER 2026 COMPLETE SOLUTIONS
◉ Problems caused by aquatic weeds. Answer: 1. Restrict or prevent
recreational activities
2. Can pose a hazard to swimmers and water skiers
3. Excessive weed growth adversely affects fish
(overpopulation/stunting, fish kills)
4. Invasive weeds disrupt native aquatic communities
5. Weeds can lower aesthetic appeal
6. Weeds can catch debris and speed up the filling in process
7. Weeds block the flow of drainage systems
8. Algae can cause foul taste and odors in drinking water
9. some algae blooms are toxic
,10. weeds provide habitat for mosquitoes and similar insects
◉ Benefits of aquatic plants. Answer: Produce oxygen, food, habitat
for fish and wildlife
stabilize shorelines
prevent erosion
remove nutrients
◉ The IDNR recommends that vegetation management plans be
developed on a _____________________ basis. Answer: Case by case
◉ One of the first invasive species to cause sever problems in the US.
Answer: Water hyacinth
◉ Invasive species take advantage of _______________ sites. Answer:
Disturbed
◉ Algae. Answer: Simple plants without true roots, leaves, flowers
, ◉ T/F: algae is found free floating, or attached to surfaces. Answer: T
◉ 3 main algae types. Answer: Microscopic
Mat forming
Chara
◉ Microscopic algae is often referred to as ______________. Answer:
Water Bloom
◉ Sudden die offs of microscopic algae lead to. Answer: Oxygen
depletion and fish kills
◉ T/F living microscopic algae is not a major source of oxygen.
Answer: F
◉ Most common blue green microscopic algae. Answer: Microcytis
Anabaena
Aphanizomenon
PAPER 2026 COMPLETE SOLUTIONS
◉ Problems caused by aquatic weeds. Answer: 1. Restrict or prevent
recreational activities
2. Can pose a hazard to swimmers and water skiers
3. Excessive weed growth adversely affects fish
(overpopulation/stunting, fish kills)
4. Invasive weeds disrupt native aquatic communities
5. Weeds can lower aesthetic appeal
6. Weeds can catch debris and speed up the filling in process
7. Weeds block the flow of drainage systems
8. Algae can cause foul taste and odors in drinking water
9. some algae blooms are toxic
,10. weeds provide habitat for mosquitoes and similar insects
◉ Benefits of aquatic plants. Answer: Produce oxygen, food, habitat
for fish and wildlife
stabilize shorelines
prevent erosion
remove nutrients
◉ The IDNR recommends that vegetation management plans be
developed on a _____________________ basis. Answer: Case by case
◉ One of the first invasive species to cause sever problems in the US.
Answer: Water hyacinth
◉ Invasive species take advantage of _______________ sites. Answer:
Disturbed
◉ Algae. Answer: Simple plants without true roots, leaves, flowers
, ◉ T/F: algae is found free floating, or attached to surfaces. Answer: T
◉ 3 main algae types. Answer: Microscopic
Mat forming
Chara
◉ Microscopic algae is often referred to as ______________. Answer:
Water Bloom
◉ Sudden die offs of microscopic algae lead to. Answer: Oxygen
depletion and fish kills
◉ T/F living microscopic algae is not a major source of oxygen.
Answer: F
◉ Most common blue green microscopic algae. Answer: Microcytis
Anabaena
Aphanizomenon
