Science Unit 6 Test (Energy & Ecosystems)

What is the process plants use to make sugar?

• decomposition

• photosynthesis

• farming

What is chlorophyll?

• a green pigment found in plant cells that allows plants to use sunlight to make food

• a living thing that gets its energy from breaking down dead organims

• a living thing that cannot make its own food

What is the name of an organism that makes its own food?

• Consumer

• Decomposer

• Producer

What do the arrows of a food chain or food web show?

• the flow or transfer of energy from one organism to another

• how organisms decompose

• how nutrients are made

What is the primary source of all energy?

• Air

• Sunlight

• Water

Which of the following is a first-level consumer?

• carnivore

• herbivore

• decomposer

As you move up the energy pyramid, the size of a population of organisms decreases. True or False?

• True

• False

What is the final stage of the food chain?

• producer

• consumer

• decomposer

At each level of the energy pyramid, organisms use ____ % of their energy for life processes.

• 50%

• 90%

• 100%

Organisms pass on ____% of energy to the next level of the energy pyramid.

• 10%

• 15%

• 100%