Ecology Quiz #2

Plants are

• producers

• consumers

• herbivores

• omnivores

What is the original (first) source of energy in most food chains and food webs?

• carbohydrates

• water

• sunlight

• carbon

The algae at the beginning of this food chain are

• consumers

• producers

• decomposers

• heterotrophs

An organism that cannot make its own food is called a(an)

• heterotroph

• autotroph

• chemotroph

• producer

Organisms that obtain (get) nutrients by breaking down dead and decaying plants and animals are called

• autotrophs

• decomposers

• omnivores

• producers

What is an organism that feeds only on plants called?

• carnivore

• herbivore

• omnivore

• detritivore

All the interconnected feeding or trophic levels in an ecosystem make up a food

• interaction

• network

• chain

• web

What animals eat both producers and consumers?

• herbivores

• omnivores

• chemotrophs

• autotrophs

What percent of the energy stored in an organism can be passed on to the next trophic level?

• 10%

• 50%

• 25%

• 90%

Which organism does the snake eat in this food web?

• rabbit

• mouse

• grass

• frog