Biodiversity Intro

A species becomes endangered when all members of the species have died.

• True

• False

Biodiversity is believed to be the result of

• divergent and convergent evolution.

• speciation and extinction.

• speciation and coevolution.

• extinction and coevolution.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

Biologists estimate that over ____% of the species that have ever lived are now extinct.

• 69

• 79

• 89

• 99

Tags

NGSS.MS-LS4-1

Which kind of diversity allows organisms on earth to adapt to and survive many changing environmental conditions?

• genetic diversity

• species diversity

• functional diversity

• ecosystem diversity

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4

Which habitat has the greatest species richness?

• boreal forest

• savannah

• short-grass prairie

• tropical rainforest

Tags

NGSS.MS-LS2-5

How many species are estimated to exist on Earth?

• 2 million

• 8 million

• 10 million

• 30 million

Tags

NGSS.HS-LS4-5

Two savanna communities both contain 15 plant species. In community A, each of the 15 species is represented by 20 individuals. In community B, 10 of the species are each represented by 12 individuals; the remaining 5 species are each represented by 3 individuals. Which statement best describes the two communities?

• Community B has a lower species richness.

• Community A has the same biodiversity as community B.

• Both communities have the same species evenness.

• Community A has a higher species evenness.

Which of the following is NOT a characteristic of ecosystems with high biodiversity?

• A large number of species

• Complex food webs

• Limited ecological niches

• Abundant resources

Tags

NGSS.MS-LS2-5

Higher biodiversity is directly correlated with:

• Increased health

• Decreased resistance to disturbances

• Increased vulnerability to changes

• Reduced resilience after disturbances

Tags

NGSS.MS-LS2-5

Which level of biodiversity involves the variety of habitats within a given region?

• Ecosystem Diversity

• Species Diversity

• Genetic Diversity

• Population Diversity