Food Web

A type of organism is missing from the food chain shown below. Which statement about the type of organism that correctly completes this food chain is not true?

• It produces its own food.

• It is unable to move from one place to another.

• It gets its energy from the sun.

• It breaks down nutrients from decaying organisms.

What role do raccoons play in this food web?

• Prey

• Producer

• Decomposer

• Consumer

Which of the following prairie food chains is in the correct order?

• Eagles → prairie dogs → coyotes

• Wildflowers → badgers → grasshoppers

• Sparrows → seeds → insects

• Grasses → prairie dogs → badgers

Which table shows the correct role of each organism in the food chain below? Algae → shrimp → arctic cod → ringed seals → polar bears

• Algae: Producers, Shrimp: Consumers, Arctic cod: Consumers, Ringed seals: Consumers, Polar bears: Consumers

• Algae: Decomposers, Shrimp: Producers, Arctic cod: Producers, Ringed seals: Producers, Polar bears: Consumers

• Algae: Producers, Shrimp: Producers, Arctic cod: Consumers, Ringed seals: Consumers, Polar bears: Consumers

• Algae: Producers, Shrimp: Decomposers, Arctic cod: Decomposers, Ringed seals: Decomposers, Polar bears: Consumers

Which change would most likely occur if all the producers in this ecosystem were removed?

• The mice would become the new producers.

• All the animals would either die or move away.

• The number of mice would increase.

• All the animal populations would increase.

Which organisms transfer the most energy within the food web?

• Bass, because they are predators in this web

• Copepods, because they support two chains in this web

• Crayfish, because they are at the bottom of this web

• Algae, because they are the producers in this web

Which organisms in this food web eat only consumers?

• Okapis

• Civets

• Leopards

• Gorillas

Which type of organism is missing from this food web?

• Decomposers

• Producers

• Predators

• Consumers

In this food web, energy is transferred directly between—

• conifer seeds and red crossbills

• conifer leaves and northern goshawks

• blue grouse and wolves

• elk and sharp-shinned hawks

What role does the prickly pear cactus play in a desert food web?

• It obtains energy from producers.

• It returns nutrients to the soil.

• It preys upon other organisms.

• It provides energy to consumers.