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Coral Reefs - Test
  • 1. What is the name of the largest coral reef system in the world?
A) Red Sea Reef
B) Hawaii Coral Reef
C) Caribbean Coral Reef
D) Great Barrier Reef
  • 2. What is a function of mangrove forests in supporting coral reefs?
A) Act as a nursery for juvenile fish
B) Prevent sea level rise
C) Stabilize coral limestone structures
D) Provide shade for coral reefs
  • 3. Which substance is built up by coral polyps to create the reef structure?
A) Silica
B) Calcium carbonate
C) Sulfur
D) Iron oxide
  • 4. What percentage of Earth's marine species are estimated to live in coral reefs?
A) 50%
B) 25%
C) 10%
D) 75%
  • 5. How do coral reefs benefit humans economically?
A) Tourism, fisheries, and protection of coastlines
B) Enhancing air quality
C) Serving as sources of fresh water
D) Providing medicinal herbs
  • 6. What is the process of mutual benefit between coral and zooxanthellae known as?
A) Symbiosis
B) Commensalism
C) Predation
D) Parasitism
  • 7. What is the main reason behind the recent decline in global coral reef health?
A) Decrease in marine pollution
B) Climate change
C) Improved conservation efforts
D) Expansion of marine protected areas
  • 8. What is the purpose of the zooxanthellae algae living within coral tissues?
A) Clean coral from debris
B) Provide coral with nutrients through photosynthesis
C) Protect coral against predators
D) Regulate coral reproduction
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