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WorksheetsEnv Sci, Ch 7, Aquatic Ecosystems, Sec 1 and 2 Quiz
Total questions: 20
Worksheet time: 15mins
Name
Class
Date
1.
Microscopic organisms that float near the surface of the water are called
a)
plankton
b)
littoral
c)
benthic
2.
The plankton that are microscopic and plant like are called
a)
zooplankton
b)
phytoplankton
c)
minnows
3.
The plankton that is animal-like is called
a)
bacteria
b)
phytoplankton
c)
zooplankton
4.
______ are all organisms that swim freely, independent of currents.
a)
Benthic
b)
Zooplankton
c)
Nekton
5.
Organisms that live on the bottom of aquatic ecosystems are known as
a)
littoral
b)
benthic
c)
nekton
6.
The zone near the shoreline in a lake is known as the _________________zone.
a)
benthic
b)
photosynthesis
c)
littoral
7.
An increase in the amount of nutrients in a lake is known as
a)
plankton
b)
oligotrophic
c)
eutrophication
8.
____________________are wetlands that contain non-woody plants.
a)
marshes
b)
swamps
c)
estuaries
9.
_____________ are wetlands that are dominated by woody plants, such as trees.
a)
marshes
b)
swamps
c)
estuaries
10.
What is man doing that is harming wetlands?
a)
By building homes and businesses on them.
b)
By draining them for farmland.
c)
By draining them for farmland & building homes and businesses on them.
d)
Man is not harming the wetlands.
11.
Mangrove swamps are named after the type of ____________ found in them that is salt tolerant.
a)
flowers
b)
grasses
c)
trees
12.
Mangrove swamps occur in warm climates near the __________________.
a)
forest
b)
oceans
c)
lakes
13.
Which type of river water has higher levels of dissolved oxygen?
a)
slow moving
b)
medium flow
c)
fast flowing
14.
Which of these is not a danger to river systems?
a)
dams
b)
pollution from runoff
c)
wind
15.
Salinity means the level of _______________in the water.
a)
oxygen
b)
salt
c)
nitrogen
16.
Brackish means that the water is
a)
only salt water
b)
a mix of fresh and salt water
c)
only fresh water
17.
Estuaries become a __________________ trap which helps plant and animal life flourish.
a)
death
b)
oxygen
c)
nutrient
18.
Most ocean pollution is caused by
a)
mans activities on land.
b)
mans activities in the ocean.
c)
none of these.
19.
True of False: The temperature of the ocean water decreases as the depth of the water increases.
a)
True
b)
False
20.
The deepest parts of the benthic zone do not get any _________.
a)
sunlight
b)
food
c)
fish
d)
chemicals
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