Sea Dwelling Species UPSC Questions

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

Sea Dwelling Species MCQ Questions


13.
Where are the highest concentrations of marine phytoplankton found?
A.
Tropics
B.
Equator
C.
High latitudes and upwelling areas
D.
Desert regions
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ANSWER :
C. High latitudes and upwelling areas
14.
What is the euphotic zone?
A.
The deep ocean trench
B.
Upper water layer with sufficient sunlight
C.
Ocean floor
D.
Area with no light
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ANSWER :
B. Upper water layer with sufficient sunlight
15.
What role do phytoplanktons play in the aquatic food web?
A.
Primary producers feeding the entire web
B.
Secondary consumers
C.
Top predators
D.
Detritivores
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ANSWER :
A. Primary producers feeding the entire web
16.
What is the biological carbon pump responsible for?
A.
Producing electricity in oceans
B.
Transferring carbon to deep ocean
C.
Generating tidal energy
D.
Oxygen removal
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ANSWER :
B. Transferring carbon to deep ocean
17.
What is the main diet of zooplanktivorous fish?
A.
Crustaceans
B.
Seaweeds
C.
Zooplankton
D.
Phytoplankton
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ANSWER :
C. Zooplankton
18.
Why are zooplankton important for assessing fishery resources?
A.
They help in fish migration
B.
They influence water temperature
C.
Their diversity indicates ecosystem health
D.
They are predators
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ANSWER :
C. Their diversity indicates ecosystem health