Water Ecosystems UPSC Questions

General Issues on Environmental Ecology, Bio-diversity & Climate Change

Water Ecosystems MCQ Questions


13.
Which lake in Gujarat is considered the oldest man-made lake in India?
A.
Chilika Lake
B.
Sudarshan Lake
C.
Neknampur Lake
D.
Loktak Lake
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ANSWER :
B. Sudarshan Lake
14.
Cultural eutrophication is primarily caused by:
A.
Volcanic activity
B.
Deforestation
C.
Human activities like wastewater discharge
D.
Natural nutrient deposition
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ANSWER :
C. Human activities like wastewater discharge
15.
Ameenpur Lake is notable for being:
A.
A Ramsar site
B.
A Tiger Reserve
C.
India's first Biodiversity Heritage Site
D.
India's first coral reef sanctuary
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ANSWER :
C. India's first Biodiversity Heritage Site
16.
Which of the following is a symptom of algal bloom?
A.
Increased oxygenation
B.
Surface layer algae growth
C.
High fish productivity
D.
Clear water
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ANSWER :
B. Surface layer algae growth
17.
What happens to dissolved oxygen levels when water temperature increases?
A.
They increase
B.
They remain unchanged
C.
They decrease
D.
It depends on pressure
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ANSWER :
C. They decrease
18.
Which technique helps reduce nitrogen runoff into water bodies?
A.
Slash and burn
B.
N-testing
C.
Overgrazing
D.
Increased irrigation
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ANSWER :
B. N-testing