AnswersIC Sem B Environmental SystemsStreams and Rivers

Wetlands Answers

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1
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Small particles of organic material are called _______.

A
discharge
B
peat
C
detritus
D
brackish
2
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Which of the following factors is least influential in affecting the biodiversity of wetlands?

A
type of wetland
B
food abundance
C
high levels of nutrients
D
water abundance
3

Which of the following is not a way in which wetlands filter water?

A
nutrient absorption
B
oil absorption
C
sediment trapping
D
bacterial absorption
4

What contributes to the high level of biodiversity found in wetlands?

A
the large amount of available organic matter to organisms that are food for larger organisms
B
the amount of available water for organism use
C
the high nutrient availability
D
all of the above
5

What distinguishes bogs, marshes, and swamps from each other?

A
Bogs are deeper than marshes and swamps, and swamps and marshes have acidic groundwater.
B
Swamps are deeper and have a larger proportion of surface water than marshes, and bogs have acidic groundwater.
C
Marshes have great biodiversity, while bogs and swamps have more water but less biodiversity.
D
Bogs, marshes, and swamps are different names for wetlands based on location and not differing characteristics.
6

How do wetlands reduce flooding and erosion?

A
Wetlands reduce flooding and erosion by filtering water.
B
Wetlands reduce flooding and erosion by absorbing water and then releasing it slowly.
C
Wetlands reduce flooding and erosion through decreased vegetation.
D
All of the above
7

What characteristic is important for plants found in saltwater wetlands?

A
tolerance to high temperatures
B
tolerance to salinity
C
a range of climate zones
D
all of the above
8

Why are wetlands important to the health of the overall environment?

A
They reduce the levels of erosion by trapping sediment.
B
They support a wide variety of organisms.
C
They are a medium for the filtration and cleansing of water.
D
All of the above are true.
9

Wetlands are limited to freshwater.

A
T
B
F
10

Halophytes can be found in salt marshes.

A
T
B
F
11

Why are wetlands important to the health of the overall environment?

A
They reduce the levels of erosion by trapping sediment.
B
They support a wide variety of organisms.
C
They are a medium for the filtration and cleansing of water.
D
All of the above are true.
12

The abundance and variety of foods available in wetlands is a large contributor to their biodiversity.

A
T
B
F
13

What distinguishes bogs, marshes, and swamps from each other?

A
Bogs are deeper than marshes and swamps, and swamps and marshes have acidic groundwater.
B
Swamps are deeper and have a larger proportion of surface water than marshes, and bogs have acidic groundwater.
C
Marshes have great biodiversity, while bogs and swamps have more water but less biodiversity.
D
Bogs, marshes, and swamps are different names for wetlands based on location and not differing characteristics.
14

Which of the following is not characteristic of marshes?

A
shallow water
B
frequent floods
C
acidic groundwater
D
herbaceous plants
15

How do wetlands reduce flooding and erosion?

A
Wetlands reduce flooding and erosion by filtering water.
B
Wetlands reduce flooding and erosion by absorbing water and then releasing it slowly.
C
Wetlands reduce flooding and erosion through decreased vegetation.
D
All of the above
16

Wetlands are limited to freshwater.

A
T
B
F
17

The abundance and variety of foods available in wetlands is a large contributor to their biodiversity.

A
T
B
F
18

What contributes to the high level of biodiversity found in wetlands?

A
the large amount of available organic matter to organisms that are food for larger organisms
B
the amount of available water for organism use
C
the high nutrient availability
D
all of the above
19

Wetlands help slow the process of erosion by trapping sediments.

A
T
B
F
20

Which of the following is not true of marshes, swamps, and bogs?

A
They can be seasonal or permanent.
B
They have very little groundwater.
C
They can be very important to migrating animals.
D
They are considered the most biodiverse ecosystems.

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