WorksheetsEcology 10:2 Biodiversity at Risk
Total questions: 20
Worksheet time: 20mins
A mass extinction is ___
a rapid increase in biodiversity.
the introduction of exotic species.
the extinction of many species in a short period of time.
a benefit to the environment.
An endangered species is
a species in danger of extinction.
a species growing on public land.
an organism brought to a place where it has not lived before.
a species that has disappeared entirely.
In what part of the world are the greatest number of extinctions occurring?
in tropical rain forests
in deserts
in the Arctic
in Europe and the United States
. The current rate of species extinction is
slower than at any other time in this century.
due primarily to the actions of humans.
the result of natural environmental processes.
of little consequence to Earth’s long-term survival.
The fact that organisms are adapted to survive in particular environments helps to explain why
captive-breeding programs are often ineffective.
non-native plant species never flourish in new areas.
habitat destruction accounts for most extinctions.
compromise is impossible on environmental issues.
A(n)____ is a species that is native to a particular place and is found only there
endangered species
endemic species
exotic species
invasive species
What groups of organisms are most in danger of extinction?
those with small populations
those that migrate or need special habitats
those with large populations that breed quickly
Both (a) and (b)
The major human causes of extinction today are
hunting and destroying habitats.
polluting and introducing non-native species.
Both (a) and (b)
Neither (a) nor (b)
Which areas of the United States represent ecosystems with high levels of biodiversity?
coastal California
Hawaiian Islands
Florida Everglades
All of the above
Where are many critical biodiversity hotspots located?
cities and developed areas of the world
islands, tropical rain forests, and coastal areas
desert and polar environments
All of the above
The Florida panther is a(n) ___ as a result of fragmentation and habitat destruction.
invasive species
exotic species
extinct species
endangered species
What human activities have influenced recent extinction events?
habitat destruction
poaching
introducing exotic species
all of the above
The passenger pigeon is an example of a(n) ___
endemic species
extinct species
exotic species
biodiversity hotspot
The Florida panther is an example of a(n) ___
endemic species
extinct species
exotic species
endangered species
The death of the dinosaurs was an example of a(n) ___
endemic species
mass extinction
poaching
biodiversity hotspot
Honeycreepers in the Hawaiian Islands is an example of a(n) ___
endemic species
extinct species
exotic species
biodiversity hotspot
The Amazon Rain Forest is an example of a(n) ___
endemic species
mass extinction
exotic species
iodiversity hotspot
Illegal hunting ___
endemic species
mass extinction
poaching
biodiversity hotspot
Species native to a given area
endemic species
exotic species
poaching
biodiversity hotspot
Threatened areas of high biodiversity
endemic species
mass extinction
poaching
biodiversity hotspot
