Ecology

The first trophic level in a food chain is the

• primary consumer

• secondary consumer

• producer

• tertiary consumer

Organisms who eat other organisms

• autotroph

• heterotroph

• producers

• all of the above

The mouse is the

• producer

• primary consumer

• secondary consumer

• herbivore

The lady bug is the

• producer

• primary consumer

• secondary consumer

• tertiary consumer

In most ecosystems, the original source of energy is the

• producer

• consumer

• sun

• carbohydrate

Organisms that produce energy during photosynthesis are

• heterotrophs

• autotrophs

• consumers

• carnivores

Consumers that eat producers are

• autotrophs

• producers

• primary consumers

• tertiary consumers

Linear feeding relationships are

• food chain

• food web

• food net

• predation

How much energy is available at the next trophic level?

• 20%

• 90%

• 10%

• 0%

An organism that eats both plants and animals is called

• herbivore

• carnivore

• omnivore

• cannibal