10% Rule Practice Quiz

What is the 10% rule in energy transfer within a food chain?

• Only 10% of energy is lost at each trophic level

• Only 10% of energy is passed on to the next trophic level

• 10% of organisms survive at each level

• 10% of the population migrates to the next level

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

If a producer has 10,000 J of energy, how much energy will be available to the primary consumer according to the 10% rule?

• 1,000 J

• 100 J

• 10 J

• 10,000 J

Tags

NGSS.MS-LS2-3

According to the 10% rule, if a secondary consumer receives 10 J of energy, how much energy did the primary consumer have?

• 1 J

• 10 J

• 100 J

• 1,000 J

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NGSS.MS-LS2-3

What percentage of energy is typically lost as heat at each trophic level in a food chain?

• 10%

• 50%

• 90%

• 100%

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

If a tertiary consumer receives 1 J of energy, how much energy did the producer originally have?

• 10 J

• 100 J

• 1,000 J

• 10,000 J

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NGSS.MS-LS2-3

Which of the following best describes why the 10% rule limits the number of trophic levels in a food chain?

• Energy is recycled at each level

• Energy is lost as heat at each level

• Organisms eat less at higher levels

• There are more producers than consumers

A grassland ecosystem has 5,000 J of energy in the grass. According to the 10% rule, how much energy would be available to a hawk that is a tertiary consumer?

• 5 J

• 50 J

• 500 J

• 0.5 J

Tags

NGSS.MS-LS2-3

If a food chain starts with 2,000 J of energy in plants, how much energy would a secondary consumer receive?

• 2 J

• 20 J

• 200 J

• 1,000 J

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NGSS.MS-LS2-3

• 8 J

• 80 J

• 800 J

• 8,000 J

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NGSS.MS-LS2-3

If a primary consumer receives 150 J of energy, how much energy did the producer have, according to the 10% rule?

• 1,500 J

• 15 J

• 1,350 J

• 15,000 J

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6