Food Chains and Ecosystems Review

What would happen to this food chain if there was no grass?

• The grasshoppers would eat the mice, and the snakes would move away.

• The mice would have more grasshoppers to eat.

• The snake population would increase.

• The grasshopper population would decrease.

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What might happen to the rest of the food chain if there was an increase in the grasshopper population?

• The mouse population will decrease.

• The snake population will decrease.

• The hawk population will decrease.

• The grass population will decrease.

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What uses the sun's energy to make its own food?

• a dog

• a flower

• a dragonfly

• water

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What is the correct food chain sequence?

• sun --> plants--> frog --> beetle

• plants --> sun --> beetle --> frog

• sun --> plants --> beetle --> frog

• beetle --> frog --> sun --> plants

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NGSS.MS-LS2-2

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What is the apex predator?

• The organism that eats the primary consumer.

• The organism at the end of the food chain.

• The organism that eats both plants and meat.

• The first organism in the food chain.

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NGSS.MS-LS2-3

What does every food chain start with?

• producers

• sun

• consumer

• decomposers

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NGSS.MS-LS1-6

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A simplified food chain for an aquatic environment is shown below: algae → mosquito larvae → small fish → large fish If the number of mosquito larvae suddenly increased, the food chain would be affected. Analyze the following consequences and select from the choices what would be the impact?

• Only I

• Only IV

• Both I and IV

• Both II and IV

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Use the following food chain to answer this question
Grass--> Insects--> Shrews-->Owl
What would happen if all the insects were to be eliminated?

• The grass would decrease and the shrews would increase

• the grass would decrease and the shrews would decrease

• the grass would increase and the shrews would decrease

• the grass would increase and the shrews would increase

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In a food chain, ​ (a)   eat ​ (b)   and are in turn eaten by ​ (c)   .

• herbivores

• producers

• carnivores

• consumers

Answer explanation

In a food chain, herbivores eat producers and are in turn eaten by carnivores.

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NGSS.MS-LS2-3

What does every food chain start with? (Even if it's not drawn or written there!)

• producers

• sun

• consumer

• decomposers

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