Ecology Practice Quiz

An organism that produces its own food supply from inorganic compounds is called a(an)

• heterotroph
• consumer
• detritivore
• autotroph

What is the original source of almost all energy in most ecosystems?

• carbohydrates
• sunlight
• water
• carbon

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

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

• 10%
• 20%
• 80%
• 50%

Water temperature would be an example of ...

• A biotic factor
• An abiotic factor

A collection of organisms that belong to different populations but all live in the same area and interact with one another.

• Population
• Ecosystem
• Community
• Ecosphere

A place where an organism lives.

• Terrain
• Habitat
• Community
• Population

A collection of organisms that make up a community as well as all of the nonliving aspects of the environment.

• Population
• Community
• Habitat
• Ecosystem

An organism at the second trophic level would be considered a...

• Top carnivore
• Producer
• Herbivore
• Carnivore