Unit Test — Unit test Answers

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21
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A family released their pet fish family into a local pond. The fish had no known local population. The impact of the fish on the ecosystem is not yet known. Which term would best define the fish added to the pond?

A
invasive species
B
introduced species
C
native species
D
symbiotic species
22
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Barnacles and whales have a commensalistic relationship in which barnacles benefit. What would most likely happen to the whale population if the barnacle population decreased?

A
become extinct
B
decrease
C
increase
D
stay the same
23

Arianne recently traveled abroad where she enjoyed eating food from different countries and learning about different cultures. A week after she returned home, she checked into the hospital with signs of nausea, fever, and diarrhea. What best explains what happened to Arianne?

A
A parasitic bacteria contaminated her food.
B
A mutualistic bacteria infected her digestive system.
C
A commensalistic organism is now living in her intestine.
D
A predatorial organism is consuming her natural bacteria.
24

Humans affect the carbon cycle in many ways through the use of fossil fuels, clear cutting of forests, and controlled burns. Which process can help counteract these human interactions?

A
photosynthesis
B
respiration
C
decomposition
D
building proteins
25

Water exits the leaves of plants and enters the atmosphere. What is this process called?

A
photosynthesis
B
condensation
C
transpiration
D
precipitation
26

A relationship in which one organism benefits while the other is neither harmed nor helped is called

A
predation.
B
parasitism.
C
commensalism.
D
mutualism.
27

Why is sustainable use of natural resources important?

A
to ensure that natural resources are available for future generations
B
to help make daily life simpler by providing what every person needs
C
to encourage scientists to make new and elaborate discoveries
D
to prevent the exchange of resources from one region to another

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