First 9 weeks review!

There are 3 roles an organism can play in an ecosystem are:

• producer, consumer, decomposer
• herbivore, carnivore, omnivore
• producer, director, actor
• predator, prey, scavenger

A ____________ breaks down waste or dead organisms and recycles nutrients.

• consumer
• producer
• decomposer
• omnivore

All consumers depend on ________ for food.

• decomposers

• other consumers

• producers

• stars

In a meadow ecosystem, a population of rabbits increases. What populations are most likely to increase as a result?

• foxes, hawks, and other predators of the rabbits

• leafy plants that rabbits eat

• rabbits that live elsewhere

• worms that live in the meadow soil

Without decomposers, what would build up on the ground and not return to the soil?

• large rocks

• rain water

• bacteria and other microorganisms

• dead plant and animal matter

All the living and nonliving things in an area make up a/an

• community.

• ecosystem.

• population.

• environment.

An organism that makes its own food is a/an

• producer.

• consumer.

• predator.

• prey.

Two or more overlapping food chains form a/an

• food chain

• food web

• community

• population

In a diagram of a food web, the arrows show the flow of

• soil

• sunlight

• oxygen

• energy

Which organism below is a consumer?

• spruce tree

• tulip

• bald eagle

• dogwood flower