AnswersIC Environmental Science - DeeringThe Importance of Trees

The Importance of Trees — Unit test Answers

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1
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Where is the carbon taken in by plants during photosynthesis stored?

A
the ground
B
plant structures
C
the air
D
all of the above
2
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Which of the following is not true concerning cover crops?

A
they prevent soil erosion
B
they can fix nitrogen in soil
C
they are sold as cash crops
D
they add organic matter to soil
3

Which of the following is a way that trees have been negatively impacted by human use?

A
deforestation
B
pollution
C
reduction
D
all of the above
4

Trees maintain the balance between gases in the air, removing carbon dioxide from the air and releasing oxygen.

A
T
B
F
5

Which of the following methods of agriculture is the most reliant upon technology and automation?

A
rangeland grazing
B
American agriculture
C
traditional rice cultivation
D
Dutch agriculture
6

Foresters work for private companies as well as government agencies.

A
T
B
F
7

Which of the following organisms is the most harmful to the tree it grows on?

A
strangler fig
B
orchid
C
Spanish moss
D
none of the above
8

Which of the following is not a reason that humans genetically engineer trees?

A
insect resistance
B
pharmaceutical production
C
faster growth
D
none of the above
9

Which of the following forest management practices keeps the forest in a state of mid to late succession?

A
clearcutting
B
uneven-aged
C
even-aged
D
seed-tree cutting
10

The shrubs and trees in windbreaks protect soil from erosion by rain water.

A
T
B
F
11

Which of the following are some reasons for the variations in agricultural practices around the world?

A
topography
B
tradition
C
amount of rainfall
D
all of the above
12

How do trees act as carbon sinks?

A
They take in carbon during the process of photosynthesis.
B
Carbon is stored in their tissue.
C
They remove carbon dioxide from the atmosphere.
D
All of the above
13

Which of the following is the best reason that trees are important for overall air quality?

A
Trees help provide a balance in components of the atmosphere.
B
Trees create shade, cooling the air.
C
Trees release moisture into the air, cooling the environment.
D
Trees help maintain overall water quality.
14

Which of the following is not true concerning tropical plantations?

A
They are generally found in humid, tropical climates.
B
Wheat and corn are common products of tropical plantations.
C
Most crops from tropical plantations are exported.
D
Cocoa, coffee and tea are common products of tropical plantations.
15

Even-aged management practices involves clearing trees that _______.

A
are all the same height
B
are all the same weight
C
are all near the same age
D
are all of widely different ages
16

Mycorrhizal fungi are _______.

A
mutualistic root-dwelling fungi that help plants obtain more water and nutrients.
B
mutualistic leaf-dwelling fungi that obtain sugar from plant leaves
C
parasitic leaf-dwelling fungi that strangle plants
D
epiphytic plants living on plant stems and leaves
17

A forester is _______

A
a person who cuts down trees
B
a park ranger
C
a person who manages and supervises land used for timber production
D
responsible for creating topographical maps of forests
18

The most common fiber used to make paper is _______.

A
cloth
B
wood
C
hemp
D
flax
19

In creating products from trees with modern technology, only half of the tree can be used. Please select the best answer from the choices provided

A
T
B
F
20

Which of the following is the most damaging method of soil remediation?

A
soil excavation and disposal
B
soil aeration
C
heating and vapor extraction
D
microbial digestion

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