Coral Reefs CDS Questions

CDS Physical Geography

Coral Reefs MCQ Questions


13.
The microscopic algae that live in symbiosis with coral polyps are called:
A.
Diatoms
B.
Zooxanthellae
C.
Plankton
D.
Cyanobacteria
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ANSWER :
B. Zooxanthellae
14.
The relationship between coral polyps and zooxanthellae is an example of:
A.
Parasitism
B.
Commensalism
C.
Mutualism
D.
Competition
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ANSWER :
C. Mutualism
15.
Coral reefs derive their vibrant colors primarily from:
A.
The calcium carbonate skeleton
B.
Reflected sunlight
C.
Zooxanthellae algae
D.
Fish and marine life around them
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ANSWER :
C. Zooxanthellae algae
16.
Coral reefs are often called the 'rainforests of the sea' because:
A.
They produce most of the world's oxygen
B.
They have the highest biodiversity in marine ecosystems
C.
They are found in tropical regions
D.
They have green-colored organisms
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ANSWER :
B. They have the highest biodiversity in marine ecosystems
17.
Approximately what percentage of marine species depend on coral reefs?
A.
5%
B.
10%
C.
25%
D.
50%
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ANSWER :
C. 25%
18.
Coral reefs are important to coastal areas because they:
A.
Increase wave intensity
B.
Act as natural breakwaters
C.
Provide drinking water
D.
Generate electricity
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ANSWER :
B. Act as natural breakwaters