Coral Reefs Quiz

What are the three main types of coral reefs?

• Fringing, Barrier, Atoll

• Continental, Oceanic, Lagoon

• Rocky, Soft, Hard

• Submerged, Exposed, Elevated

Coral reefs are primarily composed of:

• Sand and rock

• Calcium carbonate from coral skeletons

• Dead fish and algae

• Volcanic ash

Where are coral reefs mostly found?

• Cold, deep waters

• Warm, shallow tropical waters

• Freshwater lakes

• Near the Arctic Circle

What is a major threat to coral reefs?

• Photosynthesis

• Ocean acidification

• Increased fish populations

• High salinity

Coral bleaching occurs when corals lose:

• Their ability to grow

• Their colorful algae (zooxanthellae)

• Their outer shell

• Their temperature tolerance

Which human activity is most harmful to coral reefs?

• Sustainable fishing

• Coastal development and pollution

• Coral gardening

• Marine protected areas

The Great Barrier Reef is located in:

• The Caribbean Sea

• The Pacific Ocean near Australia

• The Indian Ocean

• The Atlantic Ocean

Which of the following organisms help maintain healthy coral reefs by controlling algae growth?

• Sharks

• Parrotfish

• Jellyfish

• Whales

How do coral reefs protect coastal areas?

• They absorb excess rainfall

• They act as natural barriers against strong waves and storms

• They lower sea levels

• They create new beaches

What is the main reason coral reefs are called the "rainforests of the sea"?

• They grow trees underwater

• They have high levels of biodiversity

• They produce fresh water

• They are found only in tropical regions