The Cycles of Matter Answers

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3

Which process allows water to enter the atmosphere?

A
evaporation
B
condensation
C
precipitation
D
freezing
4

Which of the following would be a result of eutrophication of a lake?

A
undergrowth of water plants
B
hypoxia, or low levels of oxygen
C
decreased decomposition
D
inactivity of fertilizers
7

Why are bacteria a necessary part of the nitrogen cycle?

A
Other living things cannot use atmospheric nitrogen.
B
Other living things cannot use the nitrogen in plants.
C
Bacteria are the main nitrogen reservoir.
D
Bacteria are the main nitrogen transpirators.
9

What process adds carbon dioxide to the air?

A
nitrogen cycle
B
water cycle
C
respiration
D
photosynthesis
11

What process adds carbon dioxide to the air?

A
nitrogen cycle
B
water cycle
C
respiration
D
photosynthesis
12

Why are bacteria a necessary part of the nitrogen cycle?

A
Other living things cannot use atmospheric nitrogen.
B
Other living things cannot use the nitrogen in plants.
C
Bacteria are the main nitrogen reservoir.
D
Bacteria are the main nitrogen transpirators.
13

The phosphorus cycle differs from the biogeochemical cycles in that

A
it does not have an atmospheric reservoir.
B
it does not have an oceanic reservoir.
C
there is no assimilation of phosphorus.
D
there is no decomposition of phosphorus.
14

What is the name of the process that plants use to remove carbon dioxide from the atmosphere?

A
transpiration
B
photosynthesis
C
respiration
D
decomposition
15

Which process allows water to enter the atmosphere?

A
evaporation
B
condensation
C
precipitation
D
freezing
16

Which of the following would be a result of eutrophication of a lake?

A
undergrowth of water plants
B
hypoxia, or low levels of oxygen
C
decreased decomposition
D
inactivity of fertilizers
17

Which best describes a possible negative impact of irrigation of farmland?

A
Food can be produced in dry areas.
B
Increased runoff can pollute bodies of water.
C
Food can be produced through drought years.
D
Water can improve the livelihood of farmers.
18

Which are limiting nutrients for plant growth?

A
water and nitrogen
B
nitrogen and carbon
C
carbon and phosphorus
D
phosphorus and nitrogen
19

Actinobacteria sp. are fermenting organisms, which do not require oxygen to survive. These organisms break down organic material and convert it to inorganic material. Which part of the carbon cycle does this describe?

A
photosynthesis
B
respiration
C
decomposition
D
assimilation
20

What would happen if there were no condensation stage in the water cycle?

A
Water could not convert from a gas to a liquid.
B
Water could not convert from a liquid to a gas.
C
Water could not convert from transpiration to evaporation.
D
Water could not convert from precipitation to evaporation.

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The Cycles of Matter Answers — TX-Biology B-CR