Ecology Test #2 Practice

Front

What is an organism that produces its own food from inorganic compounds called?

Back

Autotroph

Front

What type of interaction occurs when two different strains of bacteria are cultured together and their populations are not as great as when cultured alone?

Back

Competition

Front

What do we call organisms that break down and absorb nutrients from dead organisms?

Back

Decomposer

Front

What is the term for a symbiotic relationship in which both organisms benefit?

Back

Mutualism

Front

What is the number or variety of species in an ecosystem called?

Back

Species diversity

Front

What is the term for organisms that cannot produce their own food and must consume other organisms?

Back

Heterotroph

Front

What is the ecological term for the role an organism plays in its environment?

Back

Niche

Front

What do we call the process by which nitrogen is converted into a usable form for plants?

Back

Nitrogen fixation

Front

What is the term for the different levels in a food chain or food web?

Back

Trophic levels

Front

What is the relationship called when one organism benefits at the expense of another?

Back

Parasitism