Food Chains, Webs , Trophic Levels

What does the flow of energy through an ecosystem always begin with?

• Primary Producers

• Primary Consumers

• Heterotrophs

• Grass

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is the difference between autotrophs and heterotroph?

What shows a network of feeding relationships?

• Food Chain

• Food Web

• Pyramid of Biomass

• Pyramid of Energy

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NGSS.MS-LS2-3

What are the primary producers in this image?

• Carrot

• Grasshopper

• Grain

• Grass

• Rabbit

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

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What are the primary consumers in this image?

• Owl

• Grasshopper

• Mouse

• Bird

• Rabbit

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NGSS.MS-LS2-2

What are the secondary consumers in this image?

• Owl

• Fox

• Mouse

• Bird

• Rabbit

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NGSS.MS-LS2-2

NGSS.MS-LS2-4

10% of energy from trophic levels is lost as

• Water

• Air

• Heat

• Fat

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is biomass?

• amount of living tissue

• amount of energy

• number of individual organisms

• dead plants

Tags

NGSS.MS-LS2-3

A decomposer is

• heterotroph

• an organism that breaks down organic materials

• autotroph

• recycles nutrients

Tags

NGSS.MS-LS2-3

This pictures shows a

• Pyramid of Biomass

• Pyramid of Numbers

• Pyramid of Energy

• Food Chain

Tags

NGSS.MS-LS2-3