Catastrophic Events & Succession

A non-native animal is introduced into a diverse, mature ecosystem in equilibrium. Assuming that the non-native animal has non natural enemies and that it thrives in the ecosystem, how will it affect the community?

• Only the plants would be affected.

• The entire ecosystem would be affected.

• Only the animals would be affected.

• There would be no effect. Everything in the ecosystem would live together.

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NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

NGSS.MS-LS2-5

What is the relationship between ecological succession and equilibrium in an ecosystem?

• Ecological succession helps maintain equilibrium in an ecosystem.

• Ecological succession prevents ecosystems from ever reaching equilibrium.

• There is no relationship between ecological succession and equilibrium.

• Ecological succession and equilibrium are the same thing

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NGSS.MS-LS2-3

NGSS.MS-LS2-4

A non-native plant is introduced into a diverse, mature ecosystem in equilibrium. Assuming that the non-native plant has no natural enemies and that it thrives in the ecosystem, how will it affect the community?

• The native species will become more like the new plant

• The number of native species will decrease.

• The number of native species will not be affected at all.

• The native species will become extinct

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NGSS.MS-LS2-2

NGSS.MS-LS2-4

NGSS.MS-LS2-5

A hurricane hits a coastal prairie and destroys the habitat. Years later there is an appearance of small plants with rapidly spreading roots on newly formed coastal sand dunes. This vegetation describes--

• a microhabitat

• primary succession

• secondary succession

• biodiversity

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NGSS.MS-ESS2-2

An earthquake occurs in the Pacific Ocean. The effect that is most likely to result from this earthquake is -

• the collapse of buildings in the central United States

• extreme flooding along coastal regions

• a crater will form on the ocean floor

• a hurricane will develop

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NGSS.MS-ESS3-2

What is the main difference between primary and secondary succession?

• primary begins with soil formation and secondary starts with soil intact

• primary is the first stage and secondary is the second stage

• primary builds plant communities and secondary builds animal communities

• primary occurs after natural disasters and secondary occurs after disturbances to the ecosystem

Tags

NGSS.MS-LS2-4

Which is not an example of an area that is likely to undergo primary succession?

• a volcanic eruption leaving behind hardened lava flows

• a glacier begins to melt and move leaving behind exposed rock

• a barnacle-encrusted rock is exposed on shore at low tide

• a landslide exposes bare bedrock

In the process of ecological succession, grasses appear before shrubs because grasses -

• loosen the dirt for new trees to take root

• provide food for animals returning to the area

• require plenty of sunlight to make their own food

• can grow rapidly even in areas with shallow soil

A flood will have a greater effect on a habitat than a heavy rainfall event because a flood -

• is followed by strong winds that greatly affect a habitat

• strikes more quickly, not allowing organisms to migrate

• brings salt and other substances that harm plants

• happens more often and lasts much longer

Tags

NGSS.MS-LS2-4

What type of succession is shown going from figure A to figure B?

• primary succession
• ecological succession
• secondary succession
• intermediate

Tags

NGSS.MS-LS2-4