Ecosystems Lesson 7 Review

What is an invasive species?

• A native (naturally found) species which are added to an area. 
• A non-native (not naturally found) species added to an area. 
• A keystone species in an environment
• none of the above

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NGSS.MS-LS2-2

NGSS.MS-LS2-5

Why do the populations of invasive species grow so quickly? 

• Invasive Species are native to an area. 
• Invasive species are prey to many animals.
• Invasive species have no predators.
• Invasive species keep the ecosystems in equilibrium.

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NGSS.MS-LS2-2

NGSS.MS-LS2-4

What is an invasive species?

• An organism that is new to an environment that has positive effects on the environment.

• An organism that is native to an environment that has negative effects on the environment.

• An organism that is new to an environment that has negative effects on the environment.

• An organism that is native to an environment that has positive effects on the environment.

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NGSS.MS-LS2-2

NGSS.MS-LS2-4

Why are invasive species such a threat to native species?

• Invasive species out compete the living conditions of native species.

• Indicator species are a competition.

• Adaptations play the most crucial role in invasive species.

• Native species can out compete invasive species.

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NGSS.MS-LS2-2

NGSS.MS-LS2-4

What is formed during primary succession that doesn't need to be formed during secondary succession?

• pioneer species
• soil
• climax community
• lichens

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

• primary succession
• eutrophication
• secondary succession
• intermediate

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NGSS.MS-LS2-4

After a forest fire, an ecosystem would start regrowth through -

• primary succession
• secondary succession
• climax community
• limiting factors

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NGSS.MS-LS2-4

Which catastrophic event will most likely have the effect of returning an ecosystem to primary succession?

• A tornado
• A volcanic eruption
• A flood
• A drought

succession that occurs in an area with no soil

• ecological succession 
• primary succession 
• secondary succession
• pioneer speciles

succession that occurs in an area where soil is already present

• ecological succession 
• primary succession 
• secondary succession
• pioneer speciles