Energy Pyramid

Which trophic level below will have the LEAST amount of energy available to it?

• Primary Producers

• Primary Consumers

• Secondary Consumers

• Tertiary Consumers/Carnivores/Apex Predators

Tags

NGSS.MS-LS2-3

Why does a snake, who could eat a rabbit, receive much less energy that the original energy in the food the rabbit eats?

• Plants need/use more energy than snakes or rabbits

• 10% of energy is lost as energy transfers up trophic levels

• 90% of energy is lost as energy transfers up trophic levels

• Energy is gained as you go up each trophic level

Tags

NGSS.MS-LS2-3

Look at the energy pyramid. If 10,000 KJ is available/harnessed by grasses, how much energy is available for the ROBIN?

• 10,000 KJ

• 1,000 KJ

• 100 KJ

• 10 KJ

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

If a grassland ecosystem has 10,000 kcal of energy at the producer level, approximately how much energy would be available to the secondary consumers?

• 10,000 kcal

• 1,000 kcal

• 100 kcal

• 10 kcal

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DOK Level 2: Skill/Concept

Explain why the energy pyramid is typically shaped like a triangle.

• Because energy increases as it moves up the pyramid.

• Because energy decreases as it moves up the pyramid.

• Because the number of organisms increases at higher levels.

• Because the number of organisms decreases at lower levels.

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DOK Level 3: Strategic Thinking

What percentage of energy is typically transferred from one trophic level to the next in an energy pyramid?

• 100%

• 50%

• 10%

• 1%

Tags

DOK Level 2: Skill/Concept

Consider a simple energy pyramid with grass, rabbits, and foxes. If the grass provides 5,000 kcal of energy, how much energy would you expect the foxes to receive?

• 5,000 kcal

• 500 kcal

• 50 kcal

• 5 kcal

Tags

DOK Level 2: Skill/Concept

How does the energy pyramid concept help in understanding the limitations of energy transfer in ecosystems?

• It shows that energy is unlimited in ecosystems.

• It highlights the inefficiency of energy transfer between trophic levels.

• It demonstrates that energy is created at each level.

• It indicates that energy is only transferred between producers and decomposers.

Tags

DOK Level 3: Strategic Thinking

What is the primary reason for the decrease in energy as it moves up the energy pyramid?

• Energy is converted into matter.

• Energy is lost as heat during metabolic processes.

• Energy is destroyed at each level.

• Energy is gained through photosynthesis.

Tags

NGSS.MS-LS2-3

What rule explains why each trophic level in a food pyramid gets progressively smaller?

• The Energy Conservation Rule

• The Predator-Prey Rule

• The Biomass Rule

• The 10% Rule

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6