Ecology: food webs, energy pyramids

What kind of organism makes its own food?

• Autotroph

• Heterotroph

• Primary consumer

• Secondary consumer

What kind of organism needs to eat other organisms?

• Producer

• Consumer

Which phrase accurately describes the frog in this food chain?

• Secondary consumer

• Producer

• Primary consumer

• Tertiary consumer

A secondary consumer is a 

• Autotroph

• Heterotroph

Food chains show the flow of what through an ecosystem?

• Energy

• Matter

• Carbon

• Air

Which level of the energy pyramid contains the most energy?

• Producers

• Primary consumers

• Secondary consumers

• Tertiary consumers

What percentage of energy gets used from one level of an energy pyramid to the next?

• 10%

• 50%

• 100%

• 0%

If only 10% of the energy gets passed to the next tropic level, what happens to the rest of the energy?

• Nothing

• It is lost as heat, or undigested. (so released as waste)

• We don’t know

• It is lost as carbon dioxide

What is the name of the model that shows multiple food chains?

• Food web

• Spider web

• Food circle

• Energy pyramid

• Food chain

What is the word for the variety of organisms that live in a particular area?

• Biodiversity

• Population

• Community

• Ecosystem