Ecosystems Review

Which of the following organisms is an autotroph?

• mushroom

• green algae

• shrimp

• bread mold

Omnivores are consumers that feed on ____________.

• producers only

• consumers only

• both producers and consumers

• dead producers and consumers

Which organisms have the LEAST amount of energy in this food web?

• plantains and berries

• butterflies and greenflies

• rabbits and frogs

• foxes and buzzards

Which of the following organisms are herbivores?

• ladybugs and grasshoppers

• white grubs and caterpillars

• owls and dragonflies

• finches and mosquitoes

What is the secondary consumer in this food chain?

• sun

• hawk

• frog

• snake

What are the producers in this food chain?

• phytoplankton

• zooplankton

• small fish

• killer whales

Which organisms have the MOST available energy?

• owls

• snakes and shrews

• mice, grasshoppers, and rabbits

• grasses

What are the secondary consumers?

• diatoms and algae

• zooplankton

• fishes and crab

• large fishes

Which of the following is heterotrophic?

• sunflower

• pine tree

• algae

• mouse

Which organisms are LEAST numerous in this ecosystem?

• badgers and snakes

• rabbits and deer

• eagles and mountain lions

• flowers and trees