The Importance of Trees Answers

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Which of the following statements about the interactions between insects and trees is not true?

A
For some species of trees, insects are required for pollination.
B
Trees provide necessary shelter for a variety of insect species.
C
Insects have predatory relationships with trees, rather than mutually beneficial ones.
D
Insects can cause loss of tree productivity and even death.
3

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.
8

Why are biopharmaceuticals in high demand?

A
Biopharmaceuticals are easier to produce in mass quantities than pharmaceuticals derived from animals.
B
Biopharmaceuticals do not require testing before use.
C
Biopharmaceuticals are expensive to produce but worth the benefits.
D
All of the above
9

Which of the following is not a way in which trees benefit the environment?

A
They remove a significant amount of carbon dioxide from the atmosphere.
B
They remove a significant amount of oxygen from the atmosphere.
C
Their roots hold soil in place, reducing rates of erosion.
D
They remove ozone and particulates from the atmosphere.
13

Which of the following best explains how trees help conserve energy and reduce pollution in cities?

A
Trees shade buildings which reduces the use of energy derived from fossil fuels.
B
Trees remove carbon dioxide and add oxygen the atmosphere.
C
Trees filter particulates and polluting gases from the atmosphere.
D
All of the above
15

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
16

Why are environmentalists concerned about the introduction of genetically engineered trees?

A
Genetically engineered trees are not regulated.
B
Genetically engineered trees could have unexpected interactions with organisms of natural ecosystems.
C
Genetically engineered trees decrease the biodiversity of natural ecosystems.
D
All of the above

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