A4.2 Conservation of biodiversity

Which is not a cause of anthropogenic species extinction?

• • Overhunting

• • Deforestation

• • Introduction of new diseases

• • Asteroids

Which is the correct definition of ecosystem diversity?

• Different habitats, communities and ecological processes

• The number of species and their abundance in an area

• 
  Variety and abundance of different ecosystems in a geographical area

• The total number and type of epigenetic markers in a population

Which definitions correctly defines geneticdiversity?

• The type of alleles in a population

• Phenotypic variation in a community

• Genetic variability within a species or population

• The total number and type of epigenetic markers in a population

Which definitions correctly defines species diversity?

• Genetic variation within a species

• Phenotypic variation in a community

• The number of species and their abundance in an area

• The variety of all life on Earth

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NGSS.MS-LS2-5

Which of the following provides evidence for a higher level of biodiversity now compared to any time in the past?

• • Changing levels of atmospheric carbon dioxide

• • The fossil record

• • A decrease in the rate of evolution

• • Decreased levels of speciation

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NGSS.MS-LS4-1

How does introducing new invasive species, such as Japanese knotweed (Reynoutria japonica), to ecosystems affect biodiversity?

• • Increases biodiversity because there are more species in the ecosystem

• • Decreases biodiversity as new plants encourage new insects and animals to immigrate to the ecosystem

• • Increases biodiversity as the invasive species brings new pests into the ecosystem

• • Decreases biodiversity as the invasive species outcompetes native species for resources

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NGSS.MS-LS2-2

NGSS.MS-LS2-4

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The table shows the number of tree species in two similarly sized forests. Which statement about the two communities is correct?

• Forest 2 has the same species richness as Forest 1

• Forest 1 has a higher species evenness than Forest 2

• Forest 1 has a higher species richness than Forest 2

• Forest 2 has an equal species evenness to Forest 1

Tags

NGSS.MS-LS2-5

Which of the following is NOT a key difference between the current sixth mass extinction and the previous mass extinctions.

• the previous mass extinctions mainly impacted prokaryotes

• the previous mass extinctions were primarily caused by natural events

• the sixth mass extinction is mostly anthropogenic

• the sixth mass extinction event is FASTER than the previous ones

A diagram shows the edge of a forest next to an urban area. What is the primary conservation concern in this scenario?

• Habitat fragmentation

• Increased biodiversity

• Enhanced primary productivity

• Decrease in pollution

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NGSS.MS-LS2-4

NGSS.MS-LS2-5

Introduced or invasive species are often difficult because:

• They contribute to habitat fragmentation

• They do not adapt well to new environments

• They increase biodiversity

• They often lack natural predators

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NGSS.MS-LS2-4

NGSS.MS-LS2-5