Chapter 7 Chapter Quiz

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. Graduate students monitoring the benthic organisms of a freshwater lake take samples at different depths throughout the lake and identify the invertebrate species present. In a deep region of the lake, they discover a crustacean that appears to be a new species. They decide to study its natural history. What is the first thing they should do in this study?

Do a field research study on the crustaceans they have just found. correct incorrect

Do a field research study on closely related species of crustaceans. correct incorrect

Do a literature search to find natural history information on this species. correct incorrect

Do a literature search to find natural history information on closely related species. correct incorrect

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. Researchers doing a literature search on threatened plants in Pacific Northwest rain forests want to find out what plant species have lived there previously, and how abundant these species were in the past. Which of these sources would provide the least reliable information for their search?

U.S. Forest Service website correct incorrect

Wikipedia article on Pacific temperate rain forests correct incorrect

USDA PLANTS database correct incorrect

Peer-reviewed journal articles correct incorrect

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. Scientists studied changes in vegetation type in two areas in Africa—a desert and a semi-desert area. In 2017, they did field surveys in three selected sites in both areas, surveying the trees, shrubs, and under-shrubs at each site. They compared their results with similar studies done in 1956 and 1986, concentrating on the number of individuals of the major tree species in each area. Monitoring this species in these areas would most likely provide information relating to which aspect of conservation biology?

Identifying when species populations may be declining correct incorrect

Determining a species’ response to conservation efforts correct incorrect

Measuring the health of an ecosystem correct incorrect

Providing a witness to potential illegal activities, such as cutting trees correct incorrect

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. Conservationists want to better understand the life history of a threatened species of Colobus monkey in the Ethiopian highlands. Which study would be most appropriate to better understand the monkeys’ feeding behavior, which is essential to maintaining their population size?

Monitoring human populations, which impact the monkeys’ ability to move through their range correct incorrect

Monitoring the number and types of food items eaten during different seasons of the year correct incorrect

Monitoring the location of troops every 10 minutes using GPS, to determine feeding locations correct incorrect

Determining the precise size of the monkey’s geographic range during different seasons of the year. correct incorrect

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. Refer to the table.
 

 
According to the IUCN, which species in the table would be considered “threatened with extinction”?

All five species correct incorrect

Only the white-backed vulture correct incorrect

All species except the blue-and-yellow macaw correct incorrect

All species except the blue-and-yellow macaw and the European rabbit correct incorrect

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. A measure of threats to biodiversity indicates that fish species in Central and South America have declined by about 89% in the time period from 1970 to 2014. Based on the way threats are measured by each organization, this measure was most likely made by

Living Planet Index. correct incorrect

Red List Index. correct incorrect

IUCN Red List. correct incorrect

Natural Heritage. correct incorrect

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. On a coral reef, herbivorous parrotfish and surgeonfish graze on algae and keep the reef clean so corals can flourish. Loss or decline of these fish indicates an endangered reef. Conservationists might prioritize these fish for protection because they occupy which role on the reef?

Endangered species correct incorrect

Vulnerable species correct incorrect

Indicator species correct incorrect

Flagship species correct incorrect

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. A group of biologists is asked to undertake a rapid assessment program in a natural area. They are asked to map the area, list and enumerate the species present, and determine if the area has special characteristics or species that should be preserved. These biologists are using which approach to the conservation of biodiversity?

Species approach correct incorrect

Wilderness approach correct incorrect

Ecosystem approach correct incorrect

Hotspot approach correct incorrect

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. Green sea turtles live in the oceans and migrate long distances between feeding grounds. Every two to four years, they mate at sea, and the females travel to the beach where they were born to lay and bury their eggs. While they are onshore, humans kill them for meat and shells and collect their eggs. While at sea, they are often accidentally caught in fishing nets. Green sea turtles would best be protected by

only national laws, such as the Endangered Species Act. correct incorrect

only international agreements, such as treaties involving the UNEP and IUCN. correct incorrect

national laws, plus agreements with individual fishing companies. correct incorrect

both national laws and international agreements. correct incorrect

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. One reason that industrialized nations, such as the United States, should help pay to maintain biodiversity in other nations is that

industrialized nations are the cause of all factors leading to loss of biodiversity. correct incorrect

many problems threatening biodiversity, such as pollution and climate change, do not stop at national boundaries. correct incorrect

there is nothing poor, non-industrialized countries can do to protect biodiversity. correct incorrect

nearly all problems threatening biodiversity must be solved using technology, making industrialized nations responsible. correct incorrect