“Coral Reefs” Quiz
1. What is a nickname for coral reefs?
Answer: Rainforests of the sea” (or ocean, or something similar)
#2. What type of water are coral reefs usually found in?
Answer Coral reefs are found in warm, shallow water.
#3. What’s an abiotic factor coral reefs get a LOT of?
Answer: Since they are usually found near the equator, they get LOTS of sunshine!
#4. True or False: Coral is related to jellyfish. True!
Answer: Coral and jellyfish are closely related.
#5. What do coral polyps & algae give each other?
Answer: The algae shares some sugar it makes by photosynthesis with the polyp, and then the polyp gives the algae different nutrients it needs.
#6. What kind of coral makes up the structure of the reef – hard or soft?
Answer: Hard coral makes up the actual structure of the reef.
#7. How much sealife spends at least part of its life in a reef?
Answer: Scientists estimate that one fourth of all ocean life calls a coral reef home at some point in their lives.
#8. True or False: Sharks are the biggest threat to coral reefs.
Answer: False! Humans
are the biggest threat due to human-caused climate change.
#9. What is coral bleaching?
Answer: That’s what it’s called when the coral loses its color & turns white. It’s caused when the coral gets stressed and gets rid of ALL the algae
living in it.
#10. How does coral let fish know it needs seaweed cleaned off it?
Answer: The threatened coral “calls” the fish by releasing a chemical signal into the
water!
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