unit 9

Some beetles break down the remains of dead animals. Some mushrooms break down the remains of dead trees. How do these actions most benefit plants?

• By releasing oxygen into the air.

• By returning nutrients to the soil.

• By making space for new animals.

• By decreasing the populations of herbivores.

A consumer that eats only plants.

• Carnivore

• Omnivore

• Herbivore

The diagram shows a prairie food web. In the food web shown, all of the following are consumers EXCEPT –

• The prairie grass

• The mountain lion

• The squirrel

• The robin

Which of the following organisms is a herbivore.

• butterfly
• snake
• fox
• ladybird

The owl receives energy from which organisms?

• grasshopper and mouse
• mouse and rabbit
• rabbit and butterfly
• butterfly and frog

Name the producers in this food web.

• seagull and fish
• penguin and crab
• phytoplankton and seaweed
• seaweed and zooplankton

Which one is NOT an example of a decomposer?

• mushroom
• leaves
• mold
• worm

An organism that needs to eat other organisms to obtain energy is known as a:

• Autotroph
• Producer
• Consumer
• Mutualist

An organism that gets energy from breaking down dead organisms, non-living material or waste is a(an) ___________.

• producer
• consumer
• decomposer
• autotroph

The diagram shows a prairie food web. In the food web shown, all of the following are consumers EXCEPT –

• Prairie Grass

• Mountain Lion

• Squirrel

• Robin