Unit 2 Exam Study Test

What level of biodiversity addresses the number/variety of different populations in a particular region?

• Genetic diversity

• Species diversity

• Ecosystem diversity

• Biome diversity

Which level of biodiversity is the largest?

• Biome diversity

• Genetic diversity

• Species diversity

• Ecosystem diversity

Which of the following reasons is TRUE why biodiversity estimates vary so much?

• Humans have explored 90% of the oceans.

• Most bacteria and fungi are so large that scientists can’t fully identify them.

• Some species are hard to tell apart from other species.

• Some species are recovered from extinction and scientists can’t keep track of them.

Which of the following is a benefit from high biodiversity?

• Decreased stability in an ecosystem

• Most medicines can be derived from plants and can provide cures for diseases

• Makes disease spread faster among crops

• All species can be replaced

What is currently the reason for the most instances of extinction on Earth?

• Colonization by humans

• Natural disasters

• Commensalism relationships

• Seasonal changes

Which of the following causes of biodiversity loss is NOT directly related to human expansion?

• Habitat fragmentation/destruction

• Pollution

• Invasive species

• Overharvesting/Overconsumption

How does extirpation differ from extinction?

• Extirpation refers to the disappearance of a species at a global scale, while extinction refers to refers to the disappearance of a species locally.

• Extinction refers to the disappearance of a species at a global scale, while extirpation refers to refers to the disappearance of a species locally.

• Extinction and extirpation are the same thing.

What can happen to a population if the species lacks genetic diversity?

• The species will not be able to adapt to environmental change.

• The species population will decrease due to lower genetic fitness.

• The species will be susceptible to disease.

• All of these are correct.

What U.S. law forbids the government and private citizens from harming listed endangered and threatened species or their habitats

• IUCN (International Union for the Conservation of Nature)

• SSP (Species Survival Plan)

• CITES (Convention on International Trade of Endangered Species)

• ESA (Endangered Species Act)

Tags

NGSS.HS-LS2-7

Which of the following requires US Fish & Wildlife Service to to develop recovery plans for endangered/threatened species?

• CITES (Convention on International Trade of Endangered Species)

• SSP (Species Survival Plan)

• ESA (Endangered Species Act)

• IUCN (International Union for the Conservation of Nature)

Tags

NGSS.HS-LS4-5