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

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Suppose that a new predator of the rabbit migrated to this ecosystem. What is the most likely initial effect on the other organisms?

• More competition among the mice for food

• More competition among the hawks for food

• Less competition among snakes for food

• Less grass available for food

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NGSS.MS-LS2-2

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NGSS.MS-LS2-4

A connection of food chains with many food energy paths in an ecosystem is a ____________

• ecosystem
• food web
• environment
• population

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NGSS.MS-LS2-3

If a frog is the prey, what could be the predator?

• Grass
• Insect
• Snake
• Snail

In this food chain, what will happen if the frogs become extinct?

• The snakes will increase.
• The grasshoppers will decrease.
• The eagles will remain the same.
• The grasshoppers will increase.

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NGSS.MS-LS2-3

NGSS.MS-LS2-2

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NGSS.MS-LS2-4

The owl receives energy from which organisms?

• grasshopper and mouse
• mouse and rabbit
• rabbit and butterfly
• butterfly and frog

Tags

NGSS.MS-LS2-3

Which consumer receives energy from the leopard seal?

• blue whale
• penguin
• killer whale
• elephant seal

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-2

The shrew provides energy for the _______.

• cricket
• grasshopper
• frog
• snake

Tags

NGSS.MS-LS2-3