Ecosystems

Organisms that can produce their own source of food are called...

• heterotrophs

• omnivores

• autotrophs

• herbivores

Organisms that are unable to make their own food are called...

• autotrophs

• heterotrophs

• homeotrophs

• heterovores

A consumer that eats only plants is called...

• an omnivore

• a carnivore

• an autotroph

• an herbivore

Herbivores are also called...

• secondary consumers

• primary consumers

• producers

• tertiary consumers

Heterotrophs that consume other heterotrophs are called...

• herbivores

• omnivores

• carnivores

• producers

Heterotrophs that eat producers and other heterotrophs are called...

• autotrophs

• herbivores

• carnivores

• omnivores

How much energy moves from trophic level to trophic level?

• 100%

• 50%

• 1%

• 10%

Energy enters an ecosystem as...

• chemicals

• food

• minerals

• sunlight

On a food web, the arrows show...

• what eats what.

• where the energy is going.

• what each organism hunts.

• who is friends with whom.

The non living parts of an ecosystem

• abiotic factors
• biotic factors
• oxygen
• soil