Biology (Mader), 10th Edition

Chapter 47: Conservation of Biodiversity

Post-Test

1
Conservation biology is concerned with _____.
A)developing scientific concepts about the nature and evolutionary origin of biodiversity
B)preserving and managing ecosystems
C)All of these
2
Which of the following ethical principles is supported by conservation biology?
A)Extinctions due to human actions are acceptable.
B)Ecosystems should be simplified so they are more manageable.
C)Biodiversity is desirable for the biosphere and humans.
D)All of these
3
It is estimated that in the next 20-50 years _____ of all species now living will become extinct unless action is taken.
A)1%
B)10-20%
C)50-60%
D)90-95%
4
The most prevalent group of organisms of the species which have been described so far is _____.
A)primates
B)flowering plants
C)fish
D)insects
5
Biodiversity is affected by _____ diversity.
A)landscape
B)genetic
C)community
D)All of these
6
A number of interacting ecosystems is referred to as a _____.
A)community
B)landscape
C)panorama
D)domain
7
About _____ of the earth's species are located in areas called biodiversity hotspots.
A)5%
B)20%
C)75%
D)90%
8
A population that has limited _____ diversity is much more likely to become extinct.
A)genetic
B)community
C)landscape
9
Which of the following has provided us with a cure or treatment for some diseases?
A)Rosy periwinkle
B)Horseshoe crabs
C)Penicillium mold
D)All of these
10
Hodgkin's disease is usually curable and the survival rate for childhood leukemia has increased from 10% to 90% thanks to chemicals from the ______________.
A)rosy periwinkle
B)horseshoe crab
C)penicillium
D)All of these
11
A direct value of biodiversity to humans is _____.
A)new medicines for treatment of diseases
B)waste disposal
C)climate regulation
D)prevention of soil erosion
12
Water purification and dilution of toxins is performed by a _____.
A)tundra
B)wetland
C)estuary
D)coniferous forest
13
Which of the following is a goal of restoration ecology?
A)Mimic natural processes to bring about restoration
B)Find new species with which to restock damaged ecosystems
C)Remove humans from the most severely damaged ecosystems
D)All of these
14
Which of the following statements about the edge effect is true?
A)All areas of an ecosystem are exactly the same.
B)A small and large patch have different amounts of edge.
C)The edges around a patch have a slightly different habitat than the interior of a patch.
D)None of these
15
A population that lives in a favorable area and has a birth rate higher than the death rate is called a _____ population.
A)meta
B)source
C)sink
16
Endemic species are _____.
A)found in every ecosystem
B)found in one particular location
C)aquatic organisms
D)terrestrial organisms
17
The overfishing of perch and herring resulted in _____.
A)a decline in the seals and sea lions that eat perch and herring
B)exponential growth of sea urchins, which are usually consumed by sea otters
C)increased consumption of sea otters by orcas in lieu of seals and sea lions
D)All of these
18
Global warming is caused by _____.
A)consumption of fossil fuels
B)deforestation
C)methane production
D)All of these
19
Nonylphenols _____.
A)harm wildlife by mimicking hormones
B)cause lake eutrophication
C)deplete the ozone layer
D)are contributing to global warming
20
Acid deposition _____.
A)is only a problem where sulfur dioxide and nitrogen oxide are emitted
B)occurs when sulfur dioxide and nitrogen oxide combine with water to produce acids
C)stimulates the growth of plants that prefer acid soil
D)All of these
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