Coral Reefs quiz
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What trees act as nurseries for young reef fish?
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More questions about Coral Reefs
These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.
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Which Indo-Pacific fish has invaded Caribbean reefs?
Answer: Lionfish
Why: In the Caribbean, a single female lionfish can spawn more than 2 million eggs a year.
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Which material makes up most of the Maldives' islands?
Answer: Coral sand
Why: On the Maldives' Huvadhu Atoll, coral fragments make up about 77% of the islands' sediment.
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Whose 1983 mass die-off let algae smother Caribbean reefs?
Answer: Sea urchins
Why: More than 97% of these long-spined urchins died, in waters reaching from the Bahamas to South America.
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What is a coral?
Answer: An animal
Why: Corals stay fixed to the seafloor like plants, but unlike plants they cannot make their own food.
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Where do reef-building corals get most of their food?
Answer: From their algae
Why: The algae living in coral tissue pass on up to 90% of the food they make from sunlight.
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Which ocean region has the world's greatest variety of reef life?
Answer: Coral Triangle
Why: The Coral Triangle holds more than three-quarters of the world's reef-building coral species, across the seas of six countries.
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