3.7 and 3.8 Components and Threats to Biodiversity

Species diversity consists of BOTH...?

• richness of the species and proportion of each species in an ecosystem.

• proportion of each species and the health of the plant community in the ecosystem.

• health of the plant community and the dominant species in an ecosystem.

• dominant species and the richness of species in an ecosystem.

Tags

NGSS.MS-LS2-5

Which of the following is NOT a component of biodiversity?

• Genetic diversity

• Species diversity

• Habitat diversity

• Ecosystem diversity

Tags

NGSS.MS-LS2-5

The table shows 4 different communities in four different ecosystems, which has the greatest species diversity?

• A

• B

• C

• D

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Ecosystem diversity refers to the number of distinct...?

• Species present in a defined ecosystem

• Species present in a group of related ecosystems

• Ecosystems present in a defined area

• Ecosystems present in a random set of locations.

Tags

NGSS.MS-LS2-5

Which line in the table correctly refers to a population that has suffered the bottleneck effect?

• A

• B

• C

• D

Tags

NGSS.MS-LS4-4

Which term describes a species that humans have moved either intentionally or accidentally to a new geographic location?

• Introduced

• Naturalised

• Invasive

• Native

Which of the following would have a negative effect on biodiversity?

• planting new trees along a motorway

• leaving areas of land unmanaged in a woodland

• connecting isolated habitats that were previously in contact

• introducing an invasive species into an environment

Tags

NGSS.HS-LS2-7

NGSS.HS-LS4-5

The following list gives a description of three types of non native species.

X - a species that has spread quickly and eliminated native species.

Y - a species that has been brought into the country accidentally by humans and has started the grow.

Z - A species that has established itself within communities without detrimental effects. Which is the correct keyword for each definition?

• X - Naturalised

  Y - Invasive

  Z - Introduced

• X - Introduced

  Y - Naturalised

  Z - Invasive

• X - Invasive

  Y - Introduced

  Z - Naturalised

• X - Invasive

  Y - Naturalised

  Z - Introduced

The diagram shows the results of destruction of habitat to leave an undestroyed core area and four fragments around its edge. Which remaining fragment will exhibit the lowest species biodiversity?

• A

• B

• C

• D

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following is NOT an advantage of creating habitat corridors?

• More access to food

• More access to mates

• More competition

• Recolonisation of smaller fragments

Tags

NGSS.MS-LS2-5