WorksheetsES: [7.1] Freshwater Ecosystems
Total questions: 12
Worksheet time: 6mins
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.
Which of these is a danger to river systems?
a)
Dams are a danger to river systems.
b)
Pollution from runoff
is a danger to river systems.
is a danger to river systems.
c)
Wind is a danger to river systems.
d)
Dams, wind & pollution from runoff are danger to river systems.
12.
Which of these determines what types of organisms live in water?
a)
water temperature
b)
oxygen levels of water
c)
sunlight & nutrients
d)
water temperature, oxygen levels, sunlight & nutrients
100 %
