Food Chains Review

Based on the food chain illustrated below, what effect would be the most likely direct result of increasing the number of fish?

• Beetles would have trouble finding food.

• There would be more kinds of plants.

• The population of beetles would decrease.

• Plants would no longer survive in this habitat.

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The arrows in the diagram represent -

• an increase in size

• the flow of energy

• how they move

• decreasing temperature

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Which statement correctly describes how energy flows in the food chain shown here?

• From plant to Sun

• From snake to mosquito

• From bird to plant

• From mosquito to bird

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The diagram shows a food chain. The squirrel gets its energy directly from -

• the Sun

• the tree

• other squirrels

• the hawk

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What is most likely the first thing to result from having fewer field mice in the food chain pictured here?

• The snakes would have to find another food source.

• The plants that make seeds would decrease in number.

• The eagles would have to fly away to a location.

• The mice would eat many more kinds of seeds.

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A disease is causing plants not to grow in this habitat. How will this affect the food chain? The number of –

• large fish will increase

• small fish will increase

• small fish will decrease

• sunlight will increase

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What is the original source of energy for all organisms in a pond ecosystem?

• water

• plants

• animals

• sun

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Which food chain shows the correct flow of energy through a prairie ecosystem?

• 
• 
• 
• 

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The diagram shows an incomplete food chain. Which of the following would complete this food chain?

• Small fish

• Mosquitoes

• Green plants

• Bald eagles

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A new fish that also eats plants is introduced into a pond. What changes would occur to this pond ecosystem?

• The large fish population will decrease.

• The plant population will decrease.

• The small fish population will increase.

• The new fish population will decrease.

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