Part 1: Roles of Living Things

Identify the roles of producers, consumers, and decomposers.

• Producers create energy, consumers use energy, decomposers break down dead matter.

• Producers use energy, consumers create energy, decomposers build new matter.

• Producers and consumers both create energy, decomposers use energy.

• Producers break down dead matter, consumers create energy, decomposers use energy.

Explain the concept of trophic levels.

• Trophic levels refer to the hierarchical levels in an ecosystem, comprising producers at the base and successive levels of consumers above them.

• Trophic levels are the different layers of the Earth's atmosphere.

• Trophic levels are the stages of human development from infancy to adulthood.

• Trophic levels are the various levels of the ocean based on depth.

In most ecosystems, organisms gather food in three ways. Which of the following is not one of those ways?

• As producers

• As consumers

• As decomposers

• As predators

Energy only enters the ecosystem at the level of the ______.

• producers

• consumers

• decomposers

• scavengers

All other organisms depend on the energy captured by the ______.

• producers

• consumers

• decomposers

• scavengers

What is the role of the plant in the food chain?

Fill in the blank: The frog is a _______ in the food chain.

• frog

• predator

• prey

• herbivore

Which organism is the apex predator in the food chain?

Fill in the blank: The snake is a _______ consumer in the food chain.

What is the role of decomposers in the food chain?