Energy flow through ecosystems UNIT 3

Which is NOT true of heterotrophs?

• also called consumers

• get energy from living or once-living sources

• eat other organisms to get energy

• examples are plants, bacteria, and algae

Which is NOT true of autotrophs?

• get energy from nonliving sources

• examples are animals, bacteria, and fungi

• most capture energy during photosynthesis to make sugar

• also called producers

Which organisms are important because they recycle nutrients from dead organisms back to the soil?

• producers

• omnivores

• decomposers

• herbivores

Which process uses sunlight as a source of energy?

• photosynthesis

• cellular respiration

• chemosynthesis

• protein synthesis

Which process uses chemicals, like sulfur and methane, as a source of energy?

• photosynthesis

• cellular respiration

• chemosynthesis

• protein synthesis

How much energy gets passed on to the next trophic level?

• 10%

• 90%

• 50%

• 100%

Which of the following organisms is most likely a primary consumer?

• caterpillar

• fox

• hawk

• snake

Which of the following organisms is a producer?

• hackberry

• perch

• bluegill

• cuckoo

Which organism is the primary consumer?

• Phytoplankton

• Gulls and terns

• osprey

• herbivorous duck

What is this an example of?

• Food chain

• Food web

• Energy pyramid

• Energy web