Ecosystem Structure and Biodiversity Quiz Review

Which of the following factors is considered biotic?

• rain

• bacteria

• soil

• temperature

Tags

NGSS.MS-LS1-4

Which of the following is an abiotic factor in an ecosystem?

• animals

• grass

• water

• decomposing tree trunks

Tags

NGSS.MS-LS2-3

True or False: A dead decomposing organism is an abiotic factor.

• True

• False

Match each term with the correct definition.

• generalist species

• species that have a large impact on their environment relative to their abundance

• indicator species

• species monitored for early warnings that a community or ecosystem is being damaged

• specialist species

• a species adapted to thrive in a variety of habitats

• keystone species

• a species adapted to thrive in a specific habitat

Tags

NGSS.MS-LS2-5

Where would you expect to find the most genetic diversity among humans?

• in a city

• in a family

• in a small town

• in a tribe

In which ecosystem would you expect to find the most biodiversity?

• a desert

• a pond

• a rainforest

• a tundra

Tags

NGSS.MS-LS2-5

Which of the following is an example of human activity contributing to extinction?

• Habitat destruction

• Natural selection

• Seasonal changes

• Predation

Tags

NGSS.MS-ESS3-4

What is the background extinction rate?

• The rate at which species go extinct due to human activity

• The natural rate at which species go extinct

• The rate at which new species are discovered

• The rate at which species are born

Which factor influences the biodiversity of an ecosystem the most?

• competition

• disease

• human activity

• natural disasters

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5