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