Ecosystems Unit Review

The relationship between seaweed and sea turtles is an example of 

• decomposition
• predator and prey
• competition
• producer and consumer

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How is a food web different from a food chain?

• A food web combines many different food chains.
• A food web does not include decomposers whereas a food chain does.
• A food web is for insects whereas a food chain is for mammals.
• A food web is for insects whereas a food chain is for mammals.

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NGSS.MS-LS2-3

What is the role of an oak tree in an ecosystem?

• It cannot make its own food.
• It uses the sun's energy to make food.
• It eats other organisms.
• It breaks down dead organisms and returns nutrients to the soil.

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A forest food chain contains a tree, grasshopper, lizard, bird, and wolf.  Which organism(s) are consumers?

• All of the organisms
• wolf, lizard, and bird
• wolf
• wolf, lizard, bird, and grasshopper

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NGSS.MS-LS2-2

Which type of organism "recycles" nutrients back into an ecosystem?

• decomposers
• consumers
• producers
• omnivores

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A pond ecosystem includes a number of different types of birds, mammals, reptiles, and fish.  All of these different groups make up the ecosystem's

• microorganisms
• abiotic factors
• populations
• community

Dan lives in a small rural community several miles from the nearest city.  What do you predict will be the greatest immediate effect that a new housing development will have on the ecosystem surrounding Dan's community?

• The increase in traffic cause by the development's residents
• The strain on the existing school system caused by population growth
• The existing habitat that will be lost in construction of the development
• The increase in electricity and water usage required by the development.

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NGSS.MS-ESS3-4

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In one ecosystem, snakes eat birds, plants make fruit, and birds eat fruit.  What is the correct food chain?

• snake→plant→bird
• bird→plant→snake
• plant→bird→snake
• snake→bird→plant

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NGSS.MS-LS2-3

Which organism below is NOT an example of a decomposer?

• leaves

• mushroom

• worm

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Which of the organisms below would be a producer?

• algae

• mouse

• worm

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