Population Growth Models

 Jenn is studying a population of fish found in a pond that has a decreasing carrying capacity.  Which of the following factors would not decrease the carrying capacity of her fish? 

• drought
• flooding
• food shortages 
•  a freeze  

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Mullet are local estuarine fish that move in schools and feed on plankton and plant matter. Natural predators of the mullet include spotted sea trout, sharks, pelicans and dolphins. The graph below shows how the number of mullet in an area has changed over time. 
Based on the data, one student concludes that a new predator was introduced into the area during this time period. Which of the following is a likely alternate explanation for the change in the mullet population?

• mullet prey increased in the area
•  mullet parasites decreased in the area
• the temperature of the area increased
• the amount of aquatic plants in the area decreased

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

How does the predator-prey relationship affect a population?

• The predators and prey are in competition with each other.
• Usually either the predator or the prey will become extinct.
• The relationship controls the population size of both species.
• The predator species usually has exponential growth.

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NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which of the following is a limiting factor in a population of organisms

• reproductive replacement
•  life spans of the members
• fluctuations in atmospheric temperature
• availability of food

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

^{_{What type of growth is represented in this graph?}}

• exponential
• logistics
• a good kind
• representative

_{What type of growth is represented by this graph?}

• exponential
• logistics
• a good kind
• representative

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NGSS.HS-LS2-1

_{The parasitic wasp injects its larvae into caterpillars . Acid rain has destroyed the caterpillar population. What will happen to the wasp population?}

• Stay the same
• Increase
• Decrease

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

_{If the carrying capacity of a predator decreases, what will happen to the carrying capacity of the prey?}

• Will Increase
• Will Decrease
• Will stay the same
• Will fluctuate

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

_{What is the carrying capacity of the graph?}

• around 500
• more than 500
• less than 500
• around 600

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

^{_{What is the carrying capacity of the following graph?}}

• 1000
• 8000
• 800
• 600

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4