Energy and Matter in Ecosystems

What is the ultimate source of energy for most ecosystems?

• Water

• Plants

• The Sun

• Soil

Which organisms make their own food using sunlight?

• Consumers

• Carnivores

• Producers

• Decomposers

Which type of organism eats only other consumers?

• Herbivore

• Carnivore

• Omnivore

• Producer

What do decomposers break down?

• Sunlight

• Living plants

• Dead organisms

• Rocks

Which of the following best describes a food chain?

• Shows energy movement in one pathway

• Describes an animal’s growth

• Shows rainfall pattern

• Lists all producers in an ecosystem

What does a food web show?

• Energy in oceans

• Complex feeding relationships

• The water cycle

• Animal behaviors

Which part of the energy pyramid has the most energy?

• Top level

• Second level

• Third level

• Bottom level

What happens to most energy as it moves up the energy pyramid?

• It increases

• It remains the same

• It turns to heat

• It disappears

Which organism in a marine food chain converts sunlight to food?

• Marlin

• Shrimp

• Large shark

• Phytoplankton

What would happen if herbivores were removed from a food web?

• More producers

• Decrease in carnivores

• Increase in decomposers

• More sunlight