Font size
WorksheetsCoral Reefs
Total questions: 20
Worksheet time: 20mins
Which marine environment has the most biodiversity?
Sandy Beach
Rocky Coast
Estuary
Coral Reef
Coral Reefs are found in shallow, clear, warm water because there is
lots of sunlight for the symbiotic algae (zooxanthellae) that live with the polyps
not lots of sunlight for the symbiotic algae (zooxanthellae) that live with the polyps
no good reason, it just feels nice
all of these choices are correct
A coral polyp is actually
an animal found in Phylum Cnidaria
an animal found in Phylum Chordata
a plant found in Phylum Bryophyta
a plant found in Phylum Aniospermophyta
Coral polyps build their homes out of
carbon dioxide
calcium carbonate
calcium manganese
carbon monoxide
Large Reefs can be found near (check all that apply)
Australia
the Florida Keys
in the Caribbean
off the coast of Belize in Central America
off the coast of Maine
Hard corals include (check all that apply)
elk horn
staghorn
brain coral
table coral
fan coral
Soft corals include (check all that apply
elk horn
brain coral
table coral
sea rod
fan coral
Check all the ways that corals are fragile.
They are very productive
Pieces can break off easily
They are very sensitive to changes in water quality
They are sensitive to changes in pH levels.
They make lots of food and oxygen for the reef.
Reef inhabitants include
parrot fish, butterfly fish, sponges, worms, sharks
sharks, sea stars, people, dogs, moray eels
parrot fish, butterfly fish, sponges, cats
This example of surviving the reef is
safety in numbers
camouflage
color contrast
disruptive coloration
This example of surviving the reef is
safety in numbers
color contrast
camouflage
disruptive coloration
Coral reefs are endangered by
climate change
overfishing
pollution
all of the above
Coral Reefs are found in
tropical waters
waters around the South pole only
sub-tropical waters
A and C
The corals that form the reefs often look like rocks or ...
hills
plants
mountains
sand
What role do algae play in a coral reef?
They reduce the amount of carbon dioxide in the water.
They supply food for the corals.
They help the stony corals and soft corals live together.
They protect the corals from disease.
Most coral reefs are ____________ .
in warm areas near the shore
in warm areas away from the shore
in cold areas near the shore
in cold areas away from the shore
Which of the following is an example of coral reefs being "fragile"?
a sea urchin hiding among the coral branches of a coral reef
a sea anemone hiding in a shallow opening of a coral reef
a lobster feeding near a coral reef
a boat breaking off a piece of a coral reef
A coral reef is made up of thousands of small structures called
sea stars
polyps
sea anemones
bacteria
The largest coral reef in the world is
Fiji Coral Reef
Raja Ampat, Indonesia
Florida Keys, Florida
The Great Barrier Reef, Australia
