Decomposers Biology Quiz

What are decomposers?

• Organisms that live in extreme environments

• Organisms that always produce food through photosynthesis

• Organisms that hunt and consume other animals

• Organisms that get their energy from dead organisms or their waste products.

There do small molecules can be absorbed?

• through walls of digestive system

• through the skin pores

• they don't absorb

What is the primary role of decomposers in an ecosystem?

• To hunt and consume other organisms for energy

• To break down dead organisms and organic matter, releasing nutrients back into the ecosystem.

• To provide structural support for plants and trees

• To regulate the temperature of the ecosystem

Which of the following is an example of a decomposer?

• Lions and tigers

• Trees and flowers

• Birds and fish

• Bacteria and fungi (mushrooms)

What is the process by which decomposers break down dead organisms?

• Revitalization

• Rejuvenation

• Decomposition

• Fossilization

Which of the following is a type of decomposer that is too small to be seen without a microscope?

• insects

• bird

• worms

• microorganisms

What do decomposers release as they break down dead organisms?

• Nutrients

• Water

• Carbon dioxide

• Toxins

How do decomposers contribute to the overall health of an ecosystem?

• Decomposers reduce the nutrient levels in the ecosystem.

• Decomposers consume nutrients from the ecosystem.

• Decomposers have no impact on the overall health of the ecosystem.

• Decomposers release nutrients back into the ecosystem.

What is hyphae??

• tiny thread-like structures

• fungus

• organism

• element

What is the correct order of the food chain?

• 1. decomposer, consumer, consumer, producer

• energy, producer, primary consumer, secondary consumer, tertiary consumer

• consumer, producer, consumer