Energy in Ecosystems

This is an example of a

• food chain

• food web

• cycle of life

• energy pyramid

This is an example of a

• food chain

• food web

• cycle of life

• energy pyramid

A(n) ___________ is a more complicated model of the flow of energy in an ecosystem.

• food chain

• food web

• cycle of life

• energy pyramid

What energy role describes an organism that makes its own food, usually by using energy from the sun?

• consumer
• producer
• carnivore
• decomposer

What energy role describes an organism that cannot make its own food and therefore gets energy by eating other organisms?

• consumer
• producer
• autotroph
• sunlight

These organisms break down decaying biotic wastes and then return the materials to the ecosystem.

• decomposers
• scavengers
• carnivores
• producers

In an ecosystem, snakes feed on frogs, which feed on mosquitoes. Use of a bug spray has decreased the number of mosquitoes. What will probably happen to the number of frogs and snakes?

• Frogs will increase, snakes will increase

• Frogs will increase, snakes will decrease

• Frogs will decrease, snakes will increase

• Frogs will decrease, snakes will decrease

A raccoon eats plants and animals. It is an example of a(n)

• omnivore

• carnivore

• herbivore

• decomposer

What do producers need, other than sun, for photosynthesis?

• Water and CO₂

• Glucose and O₂

• Love and happiness

• Carbohydrates and water

A food _______ is a series of events in which one organism eats another and obtains energy.

• chain

• web

• pyramid

• plate