Week 10: Pools, Ponds, and Lakes Answers

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1
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Ponds and lakes can be natural or manmade.

A
T
B
F
2
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The main difference between ponds and lakes is that ponds _______.

A
are inland bodies of water
B
do not develop self-contained ecosystems
C
are smaller than lakes
D
have easily observed currents
3

Eutrophication is caused by _______.

A
an increase in nutrients
B
a decrease in nutrients
C
the introduction of new species of animals
D
the introduction of new species of plants
4

Most aquatic plant life can be found in the littoral zone.

A
T
B
F
5

Stream pools are more similar to ponds than lakes are.

A
T
B
F
6

Eutrophication is always the result of human activity.

A
T
B
F
7

Littoral zones are more likely to contain vegetation than riparian zones.

A
T
B
F
8

Which of the following statements about eutrophication is true?

A
Eutrophication occurs when excess nutrients are present in aquatic ecosystems, resulting in the increased production of plant life and the subsequent increase in the oxygen levels of the water.
B
Eutrophication occurs when excess nutrients are present in aquatic ecosystems, resulting in the increased production of plant life and the subsequent decrease in the oxygen levels of the water.
C
Eutrophication involves the overpopulation of aquatic ecosystems with plant and animal life.
D
Eutrophication is rarely caused by human activity.
9

Riparian zones are important to the natural environment because they _______.

A
contain pollution from runoff
B
reduce soil erosion
C
support diverse organisms
D
all of the above
10

Plankton are most commonly found in the _______.

A
pelagic zone
B
littoral zone
C
benthic zone
D
all of the above

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