Name______Class______Date______
Assessment
Chapter Test
Biodiversity
MATCHING
In the space provided, write the letter of the term or phrase that best matches the description.
_____1.species critical to the functioning of an ecosystem
_____2.application of biological science to create new products
_____3.activities such as camping in wilderness areas
_____4.different genes contained within a population
_____5.illegal hunting
_____6.number and variety of species within a given area
_____7.program that has helped return threatened species to the wild
_____8.variety of habitats and communities within ecosystems
_____9.species native to a particular area
_____ 10. threatened areas of high biodiversity
MULTIPLE CHOICE
In the space provided, write the letter of the term or phrase that best completes each statement or best answers each question.
_____ 11. What groups of organisms are most in danger of extinction?
a.those with small populations
b.those that migrate or need special habitats
c.those with large populations that breed quickly
d.both (a) and (b)
_____ 12. What human activities have influenced recent extinction events?
a.habitat destruction c. introducing exotic species
b.poaching d. all of the above
Chapter Test continued
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Environmental Science 1Biodiversity
Name______Class______Date______
_____13.Reasons for preserving biodiversity include all of the following except
a.isolating unique genetic material so it can be incorporated into existing crops.
b.increasing the chances of discovering organisms with medicinal value.
c.preventing natural evolution.
d.finding new plants that can supplement the world’s food supply.
_____ 14. How many species are estimated to be living on Earth?
a.between 10,000 and 1,000,000
b.between 500,000 and 1 million
c.between 1 and 5 million
d.between 10 and 50 million
_____ 15. Why are there so many species still unknown to modern science?
a.Many of these species are found in remote environments.
b.Smaller species receive less attention than large organisms.
c.Cataloging these species is a huge task.
d.all of the above
_____ 16. Where are many critical biodiversity hotspots located?
a.cities and developed areas of the world
b.islands, tropical rain forests, and coastal areas
c.desert and polar environments
d.all of the above
_____ 17. It is often difficult to save individual species because
a.small populations are more prone to disease.
b.inbreeding may result in genetic disorders.
c.captive species may not reproduce in the wild.
d.All of the above
_____ 18. Preserving entire ecosystems rather than individual species is a good conservation strategy because
a.only endangered species will be saved.
b.developers will have greater access to land.
c.more than one species can be saved.
d.it will not be necessary for environmentalists to study the ecosystem.
_____ 19. Where are some of the unique ecosystems of the United States?
a.in Pacific Northwest and California
b.in the Florida Everglades and Hawaii
c.both (a) and (b)
d.none of the above
_____ 20. How did the CITES treaty reduce the slaughter of elephants?
a.It offered a bounty to tribal leaders for identifying poachers.
b.It banned imports and exports of all ivory worldwide.
c.It limited sales of ivory to the antique market.
d.both (a) and (c)
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Environmental Science 1Biodiversity
TEACHER RESOURCE PAGE
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Environmental Science 1Biodiversity