2.12: Energy Pyramids

Multiple Choice

This organism is categorized as a(n) ____________,ecologically, because it feeds on dead matter.

• herbivore

• omnivore

• carnivore

• decomposer

Multiple Choice

Which of the following statements about this food web is FALSE?

• the ultimate source of energy for the whole food web is the radiant energy of the SUN

• radiant energy from the sun is converted into chemical energy (glucose) by producers

• arrows in a food web show the direction that energy moves from one trophic level to another

• 100% of the energy made by the vegetation is passed to the geese and mute swans

• energy is used up by each trophic level, and ultimately lost as heat energy

Multiple Choice

A pyramid shape is used to show the amount of available energy at each trophic level because... 

• energy decreases as you go up the food chain, just like the pyramid shape gets smaller as you go up. 
• energy increases up the food chain just like the pyramid shape gets smaller as you go up. 
• energy amounts are the same at each trophic level

Multiple Choice

Why are producers found at the base of the pyramid?

• They create all of the energy and therefore have the most energy of all of the trophic levels
• There are more plants than animals. 
• They begin the flow of energy in an ecosystem.
• All of these answers are correct. 

Multiple Choice

In this energy pyramid, what is the proper name for ANY ORGANISM ABOVE THE PRODUCER LEVEL?

• decomposers
• consumers
• producers
• omnivores

Multiple Choice

In the energy pyramid below, which organism has the least amount of energy available?

• Producers
• Herbivores
• Carnivores
• Top Predator

Open Ended

Use this energy pyramid to answer the question -

What is the original source of the energy that flows through most ecosystems?

Multiple Choice

Use this energy pyramid to answer the question -

Assume there are 1000 units of energy in the producer level of the energy pyramid.

How many units of energy are available at the primary consumer level?

• 1000 units

• 100 units

• 10 units

• 1 unit

Multiple Choice

Use this energy pyramid to answer the question -

Assume there are 1000 units of energy in the producer level of the energy pyramid.

How many units of energy are available at the secondary consumer level?

• 1000 units

• 100 units

• 10 units

• 1 unit

Multiple Choice

Use this energy pyramid to answer the question -

Assume there are 1000 units of energy in the producer level of the energy pyramid.

How many units of energy are available at the tertiary consumer level?

• 1000 units

• 100 units

• 10 units

• 1 unit

Match

Label the producers and consumers, then label the different types of consumers.

• 1

• 2

• 3

• 4

• 5

Tertiary Consumer

Secondary Consumers

Primary Consumers

Consumers

Producers

• Tertiary Consumer

• Secondary Consumers

• Primary Consumers

• Consumers

• Producers

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