Oceans Question Preview (ID: 25675)
Oceans.
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Fish use their gills to get _____ from the water.
a) carbon dioxide
b) salt
c) plankton
d) oxygen
Which type of aquatic ecosystem is formed from the calcium carbonate shell secreted by animals?
a) lake
b) seamount
c) coral reef
d) estuary
Animals with gills live ________
a) in water
b) in trees
c) in deserts
d) on mountains
Which feature is needed in order for a pond animal to obtain oxygen from the water?
a) gills
b) lungs
c) scales
d) fins
The part of the ocean where the water is too deep for sunlight to penetrate to the bottom is called the _____zone.
a) aquatic
b) eutrophic
c) littoral
d) benthic
In an ocean ecosystem, the greatest diversity of organisms is found:
a) near the bottom
b) near a shoreline
c) at the surface
d) in a coral reef
Which of the following would be found at the bottom of an aquatic food chain
a) coral
b) water
c) minnows
d) phytoplankton
Aquatic ecosystems are classified based on the salinity of the water. These two ecosystems are:
a) marine and swamp
b) freshwater and marine
c) wetland and freshwater
d) brackish and marine
Which aquatic biome consists of a mix of fresh water and salt water?
a) an estuary
b) a mountain stream
c) a lake
d) the ocean
What marine ecosystem is built by tiny animals called polyps?
a) mangrove swamp
b) coral reef
c) estuary
d) ocean
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