Flow of Energy & Matter in an Ecosystem

What does every food chain start with? (Even if it's not drawn or written there!)

• producers
• sun
• consumer
• decomposers

An organism that needs to eat other organisms to obtain energy is known as a:

• Autotroph
• Producer
• Consumer
• Mutualist

Consumer that eats plants

• heterotroph
• herbivore
• producer
• community

What is the term for each step in the transfer of energy and matter within a biological community?

• energy path
• food web
• trophic level
• food pyramid

The amount of energy that usually transfers from one trophic level to the next...

• 10%
• 20%
• 80%
• 50%

An illustration that uses arrows to show the MANY possible directions in which matter and energy can pass through the organisms in an ecosystem.

• Food chain
• Food web
• Energy Pyramid
• Succession Map

A graphic illustration that shows each trophic level and the amount of useable energy contained within.

• Food chain
• Food web
• Energy Pyramid
• All of these

As you move upward, from level to level, in an energy pyramid, energy _____.

• increases
• decreases
• stays the same
• increases exponentially

In this energy pyramid, which organisms have the most energy available?

• Producers

• Carnivores

• Herbivores

• Top Predator

In this energy pyramid, which organism has the least amount of energy available?

• Producers

• Herbivores

• Carnivores

• Top Predator