Food Chains & Food Webs

This picture represents

• a population

• a food chain

• a food web

• an ecosystem

Tags

NGSS.MS-LS2-3

An organism that makes its own food is called a(n)

• heterotroph

• geotroph

• autotroph

• anthropotroph

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NGSS.MS-LS2-3

Which organisms are always found in the first trophic level of a food chain?

• Consumers

• Heterotrophs

• Producers

• Detrivores

True or False? In an ecosystem, energy is transferred between species when one species eats another species.

• True

• False

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

Organisms in the trophic levels above the autotrophs are called

• Decomposers

• Heterotrophs

• Producers

• Detrivores

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NGSS.MS-LS2-2

In a healthy ecosystem, which trophic level should have the most energy?

• Producers

• Primary Consumers

• Secondary Consumers

• Tertiary Consumers

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

If the mouse population becomes sick and decreases, which statement about the food web will be true?

• The grass population will decrease.

• The hawk population will increase.

• The grass population will increase.

• The wildflower population will decrease.

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NGSS.MS-LS2-2

NGSS.MS-LS2-1

NGSS.MS-LS2-4

True or False? There cannot be more than one keystone species in an ecosystem.

• True

• False

In a food web, the process of __________ returns any remaining energy to the soil.

• decomposition

• respiration

• digestion

• ingestion

Tags

NGSS.MS-LS2-3

At each trophic level, energy is lost as heat from metabolic processes. How much energy is transferred from one trophic level to the next?

• 5% of energy is transferred to the next level.

• 10% of energy is transferred to the next level.

• 15% of energy is transferred to the next level.

• 20% of energy is transferred to the next level.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6