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Pre Test Quiz
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1
What does the term biodiversity refer to?
A)the variety of life on Earth
B)the major terrestrial ecosystems of the planet
C)the natural resources of the planet
D)the habitats of threatened and endangered species
2
Which of the following ethical principles is supported by conservation biology?
A)Biodiversity brought about by evolutionary change is of no value
B)Extinctions due to human impacts that are deemed necessary for humans are acceptable
C)Ecosystems should be simplified so that they are more manageable
D)Biodiversity is desirable for the biosphere and for humans
3
Which of the following are causes of species extinctions?
A)habitat loss
B)alien/invasive species
C)pollution
D)All of these are causes of extinction.
4
With improved technology and an increased fishing fleet, the harvest of fish in that last decade in the United States has
A)increased more than in the previous 50 years.
B)increased due to the harvest of previously discarded fish.
C)declined significantly.
D)remained constant due to an increase in the available fish.
5
What is a keystone species?
A)the most prevalent species within a community
B)a species that influences the viability of a community, thought it may not have a large population
C)a species that is introduced through colonization, horticulture, agriculture, and accidental transport
D)a species that is not critical to an ecosystem, but evokes an emotional response from humans





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