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Aquatic & Mosquito- Commercial
Category 5.0 2025/2026 Exam Questions
Marking Scheme New Update | A+ Rated
List the roles plants play in a healthy aquatic ecosystem. - 🧠 ANSWER ✔✔-
Producing oxygen for other organisms
-Preventing shoreline erosion
-Lessening excess nutrients
-Stabilizing the lake bottom
-Providing food/habitat
List ways that excessive plant growth can adversely affect the ecology and uses of
a water body. - 🧠 ANSWER ✔✔-Harms the ecology
-Prevents recreational water use
-Makes drinking water smell/taste bad
-Hampers water treatment operations
-Produces toxins that are harmful to drink
1
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
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Describe the general growth habits of, means of dispersal, and potential problems
caused by emergent aquatic plants. - 🧠 ANSWER ✔✔Growth habits: arrowhead,
cattail
Means of dispersal: underground roots
Problems: purple loosestrife
Describe the general growth habits of, means of dispersal, and potential problems
caused by submerged aquatic plants (both pond weeds and plants with whorled
leaves). - 🧠 ANSWER ✔✔Growth habits: curly pondweed vs. coontail
Means of dispersal: runners vs. wind/water
Problems: N/A vs. restricts boating and swimming
Describe the general growth habits of, means of dispersal, and potential problems
caused by free-floating and rooted floating-leaved aquatic plants. - 🧠 ANSWER
✔✔Growth habits: duckweed vs. pond lily
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COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, 3
Means of dispersal: wind vs. roots
Problems: hard to get rid of vs. N/A
Describe the general growth habits of, means of dispersal, and potential problems
caused by free-floating, filamentous, and "rooted" algae. - 🧠 ANSWER ✔✔Free-
floating: blue-green algae, growth limited by phosphates, release toxic compounds
Filamentous: anchor themselves to rocks, weeds, etc., long and stringy
Rooted: rooted to bottom with bristly stems and branches, Chara and Nitella
List the advantages and disadvantages of chemical control of aquatic plants and
algae. - 🧠 ANSWER ✔✔(+) Longer lasting control than mechanical
(+) Less physical labor
(+) Costs less
(+) Selective chemical options
(-) Restrictions on water use
3
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
Aquatic & Mosquito- Commercial
Category 5.0 2025/2026 Exam Questions
Marking Scheme New Update | A+ Rated
List the roles plants play in a healthy aquatic ecosystem. - 🧠 ANSWER ✔✔-
Producing oxygen for other organisms
-Preventing shoreline erosion
-Lessening excess nutrients
-Stabilizing the lake bottom
-Providing food/habitat
List ways that excessive plant growth can adversely affect the ecology and uses of
a water body. - 🧠 ANSWER ✔✔-Harms the ecology
-Prevents recreational water use
-Makes drinking water smell/taste bad
-Hampers water treatment operations
-Produces toxins that are harmful to drink
1
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
,2
Describe the general growth habits of, means of dispersal, and potential problems
caused by emergent aquatic plants. - 🧠 ANSWER ✔✔Growth habits: arrowhead,
cattail
Means of dispersal: underground roots
Problems: purple loosestrife
Describe the general growth habits of, means of dispersal, and potential problems
caused by submerged aquatic plants (both pond weeds and plants with whorled
leaves). - 🧠 ANSWER ✔✔Growth habits: curly pondweed vs. coontail
Means of dispersal: runners vs. wind/water
Problems: N/A vs. restricts boating and swimming
Describe the general growth habits of, means of dispersal, and potential problems
caused by free-floating and rooted floating-leaved aquatic plants. - 🧠 ANSWER
✔✔Growth habits: duckweed vs. pond lily
2
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, 3
Means of dispersal: wind vs. roots
Problems: hard to get rid of vs. N/A
Describe the general growth habits of, means of dispersal, and potential problems
caused by free-floating, filamentous, and "rooted" algae. - 🧠 ANSWER ✔✔Free-
floating: blue-green algae, growth limited by phosphates, release toxic compounds
Filamentous: anchor themselves to rocks, weeds, etc., long and stringy
Rooted: rooted to bottom with bristly stems and branches, Chara and Nitella
List the advantages and disadvantages of chemical control of aquatic plants and
algae. - 🧠 ANSWER ✔✔(+) Longer lasting control than mechanical
(+) Less physical labor
(+) Costs less
(+) Selective chemical options
(-) Restrictions on water use
3
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
