Food Webs

What do the arrows in the food chain indicate about the flow of energy in an ecosystem?

• Energy is continuously recycled by the organisms in an ecosystem.

• Energy flows in one direction in an ecosystem, from producers to consumers.

• More of the available energy in an ecosystem is given to large animals than to small animals.

• Organisms at the end of the food chain receive more energy than those at the beginning.

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NGSS.MS-LS2-3

In this energy pyramid, which organism would most likely be in level 2?

• bird

• fox

• caterpillar

• tree

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NGSS.MS-LS2-3

The diagram shows part of an aquatic food web for a stable lake ecosystem in Connecticut. What is the source of energy for the algae?

• waves

• sunlight

• bacteria

• rotifers, water fleas and tadpoles

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

For the food chain shown, which of the following changes would have the most severe consequences?

• a drastic decrease in rainfall, causing a drought

• the poaching of predatory hawks by game hunters

• the introduction of a second predator that eats field mice

• a parasitic infestation that reduces the cricket population

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-2

The diagram provided shows a marine food chain. In this food chain, the zooplankton are

• primary producers.

• primary consumers.

• secondary consumers.

• tertiary consumers.

Tags

NGSS.MS-LS2-3

The picture provided shows an ocean bay food chain. Sea otters move into the ocean bay. They eat all of the sea urchins. This change will cause the

• kelp to have less food.

• crabs to have more food.

• sea ducks to have less food.

• arctic foxes to have more food.

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NGSS.MS-LS2-3

NGSS.MS-LS2-1

NGSS.MS-LS2-4

The picture shows an energy pyramid. What will most likely happen to the foxes and the wolves if the rabbits are removed?

• The foxes will eat more wolves.

• The foxes will eat fewer wolves.

• There will be more foxes and wolves.

• There will be fewer foxes and wolves.

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NGSS.MS-LS2-3

NGSS.MS-LS2-1

NGSS.MS-LS2-4

The picture shows the energy flow through a meadow community. Which of the following would most likely occur to the populations within the community of organisms immediately after a wildfire burns the environment?

• Hawks would increase and foxes would increase.

• Hawks would decrease and foxes would increase.

• Meadow plants would increase and rabbits would decrease.

• Meadow plants would decrease and rabbits would decrease.

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NGSS.MS-LS2-3

NGSS.MS-LS2-1

NGSS.MS-LS2-4

From where do autotrophs obtain their energy?

• The sun
• Other organisms

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

What is another name to describe an autotroph?

• Consumer
• Producer

Tags

NGSS.MS-LS2-3