Exploring Biodiversity and Ecosystems

What is biodiversity?

• The variety of life in an ecosystem

• The number of trees in a forest

• The amount of rainfall in a year

• The temperature range of a region

Tags

NGSS.MS-LS2-5

What is the first stage of ecological succession?

• Climax community

• Pioneer stage

• Intermediate stage

• Secondary stage

Which of the following is an example of a negative human impact on biodiversity?

• Planting trees

• Deforestation

• Creating national parks

• Recycling

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

What is primary succession?

• Succession that occurs where no soil exists

• Succession that occurs in areas where soil is already present

• The final stage of succession

• The process of species extinction

Which of the following best describes secondary succession?

• It occurs in an area where no life has existed before

• It occurs in areas where a disturbance has destroyed an existing community but left the soil intact

• It is the first stage of ecological succession

• It is the process of soil formation

Explain why ecosystems with high biodiversity are more resilient to changes.

• They have more species that can fill ecological roles

• They have fewer species competing for resources

• They have a single dominant species

• They are less complex

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which of the following is a consequence of reduced biodiversity?

• Increased ecosystem stability

• Decreased sustainability

• Enhanced genetic variation

• Improved resource availability

Tags

NGSS.MS-LS2-5

Describe the difference between primary and secondary succession.

• Primary succession occurs in areas without soil, secondary occurs in areas with existing soil

• Primary succession is faster than secondary

• Primary succession involves only plant species, while secondary involves animal species

• Primary succession occurs in water, while secondary occurs on land

What is the climax community in ecological succession?

• The first community to colonize an area

• The final, stable community in succession

• A community that is constantly changing

• A community with low biodiversity

Tags

NGSS.HS-LS2-6

What is an example of a pioneer species in primary succession?

• Oak trees

• Lichens

• Grasshoppers

• Wolves