apes chapter 18

When non-local species spread rapidly across large areas, they are called

• exotic species

• invasive species

• native species

• endangered species

• alien species

Which ecosystem has gained the attention of conservationists most recently?

• tropical rain forests

• grasslands & prairies

• wetlands

• redwood forests

• sensitive marine habitats

Which is NOT an example of an instrumental value of ecosystems?

• beautiful scenery

• timber

• food

• insect pollination

• medicinal products

When the last member of a species dies, ________ has occurred.

• extinction

• exculsion

• selection

• declines

• endangerment

What is the IUCN label for species that are at high risk of extinction?

• endemic

• species of special concern

• threatened

• near-threaten

• declining

The amphibians graph is based on assessments of about 4,700 species. Out of the species assessed, about how many are threatened?

• 2,040

• 8,160

• 40

• 320

• 1,927

The most severe effect resulting from loss of insect species globally would likely be

• an increase in soil erosion

• a reduction in water qualitiy

• a decline in food crop pollination

• an increase in disease vectors

• a loss of aesthetic value

River barriers such as dams cause species endangerment because of

• exotic species introdcution

• habitat alteration

• commerical harvesting

• pollution

• direct exploitation

Which endangered species is associated with logging of old growth forests in the Pacific Northwest?

• black footed ferret

• roanoke log perch

• polar bear

• mountain lion

• northern spotted owl

Which North American species was driven to extinction by overharvesting?

• bald eagle

• american bison

• passenger pigeon

• kudzu

• dodo