Bio 20 Unit A Review (Chs 1 & 2)

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 does a food web represent?

• All connections of energy flow throughout all organisms in a habitat.
• The specific ways that mutualism is carried out.
• A single pathway or energy flow between organisms. 
• How carnivores get their food. 

The rabbit in this food web would be considered a:

• Decomposer
• Producer
• Secondary Consumer
• Primary Consumer

In this Food Web Pyramid Which type of consumer gets only 10% of the energy stored in plants?

• Herbivore
• Carnivore
• Omnivore
• Secondary Consumer

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%

The nonliving aspects of an ecosystem.

• Abiotic factors
• Biotic factors

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

• increases
• decreases
• stays the same
• increases exponentially