Biology- Ecology Unit Quiz

What is another term for a producer?

• Heterotrophs

• Autotrophs

• Consumers

• Omnivores

This is an organism that obtains their energy from dead matter or waste?

The ______ trophic level is always the producer.

This is multiple connected food chains showing the complex interactions within an ecosystem.

• Food web

• Food chain

• Primary producer

• Primary web

What percentage of energy is passed between the trophic levels?

• 100%

• almost 50%

• 10%

• about 30%

Which of the following is NOT only of the biogeochemical cycles that are essential for life?

• Water cycle

• Kreb cycle

• Nitrogen cycle

• Carbon cycle

This process occurs when liquid water returns to the atmosphere?

When water continues to seep into the soil to becomes ground water, this process is known as _____________?

Carbon can return to the air and water in what 3 ways (pick three)

• respiration

• transpiration

• evaporation

• erosion

• combustion

We rely on ________ in order to help make nitrogen usable?

• carnivores

• decomposers

• bacteria

• earthworms

• All of the above