WorksheetsCoral reefs
Total questions: 10
Worksheet time: 5mins
Corals are
tiny plant organisms that live in clear ocean waters
colourful calcium carbonate marine rock formations
small marine animal organisms
none of the above
What is the relationship between corals and zooxanthellae?
zooxanthellae grow on the corals and protect them from extreme sunlight
corals provide food for zooxanthellae when they photosynthesize
zooxanthellae grow at the expense of the corals
corals receive their energy from the zooxanthellae
Corals seem to grow best in
cool, clear and calm waters
warm, shallow salt water in high wave energy areas
warm, clear, nutrient rich waters of the ocean
clear, clean fresh waters of the tropics
Atoll reefs can be found in
Australia, Tobago and Barbados
Antigua, Belize and St. Lucia
Belize, Bahamas and Hawaii
Australia, Antigua and Bermuda
Which type of reef is separated from the shore by a narrow, shallow lagoon?
Fringing
Barrier
Atoll
Patch
Which reef is shown above?
The Belizean Reef
The Bucco Reef
The Bahamas Reef
The Australian Reef
Coral reefs provide all of the following benefits EXCEPT
Protection against storm waves
Medicinal substances for the pharmaceutical industry
Materials for paper manufacturing
A source of food and livelihood
Coral reefs provide habitats for _______ of marine inhabitants.
30%
50%
80%
25%
Which threat to coral reefs is associated with the sewage run-off into the ocean?
Algal bloom
Sedimentation
Ocean acidification
Coral bleaching
Which of the following actions are LEAST LIKELY to protect coral reefs
Creating artificial reefs to protect coasts
Reducing the use of plastic products
Avoiding walking on coral reefs
Legislation to make coral reefs protected areas
