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Oceans
Test Description: Oceans
Instructions: Answer all questions to get your test result.
1) Fish use their gills to get _____ from the water.
A
salt
B
plankton
C
carbon dioxide
D
oxygen
2) Which type of aquatic ecosystem is formed from the calcium carbonate shell secreted by animals?
A
lake
B
seamount
C
estuary
D
coral reef
3) Animals with gills live ________
A
on mountains
B
in trees
C
in water
D
in deserts
4) Which feature is needed in order for a pond animal to obtain oxygen from the water?
A
gills
B
scales
C
lungs
D
fins
5) The part of the ocean where the water is too deep for sunlight to penetrate to the bottom is called the _____zone.
A
littoral
B
benthic
C
eutrophic
D
aquatic
6) In an ocean ecosystem, the greatest diversity of organisms is found:
A
near the bottom
B
at the surface
C
in a coral reef
D
near a shoreline
7) Which of the following would be found at the bottom of an aquatic food chain
A
water
B
coral
C
minnows
D
phytoplankton
8) Aquatic ecosystems are classified based on the salinity of the water. These two ecosystems are:
A
marine and swamp
B
freshwater and marine
C
brackish and marine
D
wetland and freshwater
9) Which aquatic biome consists of a mix of fresh water and salt water?
A
the ocean
B
a mountain stream
C
a lake
D
an estuary
10) What marine ecosystem is built by tiny animals called polyps?
A
coral reef
B
estuary
C
mangrove swamp
D
ocean
*select an answer for all questions
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