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