Calculating Energy Flows

Matter & Energy Flow in an Ecosystem

Model Representation

Multiple Choice

If a producer is an autotroph who produces energy in the form of food, in which of the following kingdoms could we find producers?

• Animalia

• Archaebacteria

• Plantae

• Fungi

Multiple Choice

The total mass of living tissue at each trophic level is illustrated with which type of pyramid?

• Energy pyramid

• Biomass pyramid

• Pyramid of numbers

Multiple Choice

If producers in an energy pyramid produce 500,000 calories of energy, how many calories of energy would be available at the third trophic level?

• 50 joules

• 500 joules

• 5,000 joules

• 50,000 joules

Multiple Choice

What percentage of energy is transferred from one trophic level to the next within an ecosystem?

• 1%

• 5%

• 10%

• 90%

Multiple Choice

Which organisms are autotrophs?

• Shark

• Squid

• Small fish

• Algae

Multiple Choice

Which organisms are herbivores?

• Zooplankton

• Small fish

• Squid

• Algae

Multiple Choice

What type of heterotroph would most likely enter the food chain if a shark dies and falls to the ocean floor?

• Herbivores

• Omnivores

• Carnivores

• Detritivore

Multiple Choice

What is the flow of energy for the rabbit?

• From the grass to the rabbit to the hawk.

• From the hawk to the rabbit to the grass

• From the hawk to the mouse to the grass to the rabbit.

Open Ended

Starting with the producer, list a food chain from the image with all of its consumers.