Island Ecosystems

What is is the study of how and why plants and animals live where they do?

• Evolution

• Adaptive Radiation

• Biogeography

• Biogeology

Why are advantageous traits more likely to be passed onto offspring?

• Because they are more likely to survive and reproduce.
• Because they come from dominant alleles.
• Because they come from recessive alleles.
• Because the trait is an acquired phenotype.

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NGSS.MS-LS1-4

NGSS.MS-LS4-4

A(n) ______ in species diversity is associated with a(n) ________ in the functions an ecosystem provides.

• increase; decrease

• decrease; increase

• decrease; unobserved change

• decline; decline

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NGSS.MS-LS2-3

Which is NOT a factor in the theory of island biogeography?

• Islands farther from the continent have more species due to increased speciation
• dispersing species are more likely to find a large habitat
• islands can also be isolated areas within a continent
• larger habitats contain a larger range of environmental conditions

Which of the following is true about island biodiversity?

• Small islands are more likely to have more immigrated species

• Small islands have higher biodiversity than large islands

• Small islands have more resources and as a result may have more species

• Small islands have fewer resources and as a result may have fewer species

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

What prediction is correct about island biogeography?

• Smaller islands have more resources, and will have more biodiversity

• Larger islands have more space for resources, but will have less biodiversity due to competition

• Islands closer to mainland will be more diverse due to more successful dispersal.

• There is more diversity far away from the mainland because some species fly.

The theory of island biogeography suggests that species richness is affected by which of the following factors?

I. island distance from mainland

II. how the island is formed

III. island size

• II only

• III only

• I and III

• II and III

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 A has the same biodiversity as community B
• Both communities have the same species evenness
• Community B has a higher species richness
• Community A has higher species evenness

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NGSS.MS-LS2-5

What term describes the variety of different organisms found in an ecosystem?

• population
• biodiversity
• ecosystem services

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NGSS.MS-LS2-5

The LESS genetically diverse a population is, the better it can respond to environmental stressors

• True

• False

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NGSS.MS-LS4-4