Ecology Unit Test Review

Front

What do you call it when one species benefits and the other species is not really affected in any way?

Back

Commensalism: A relationship between two organisms where one benefits and the other is neither helped nor harmed.

Front

An organism that makes its own food is called a?

Back

Producer: An organism, typically a plant, that can create its own food through photosynthesis.

Front

Which of the following is a primary producer in a forest ecosystem?

Back

Oak tree: A type of tree that produces its own food and serves as a primary source of energy in the ecosystem.

Front

What is the source of all energy in an ecosystem?

Back

Sun: The primary source of energy for all living organisms on Earth.

Front

What is a decomposer?

Back

An organism that eats dead things: Decomposers break down dead organic material, returning nutrients to the soil.

Front

What is mutualism?

Back

A symbiotic relationship where both species benefit from the interaction.

Front

What is predation?

Back

A relationship where one organism (the predator) hunts and eats another organism (the prey).

Front

What is a food chain?

Back

A linear sequence of organisms through which nutrients and energy pass as one organism eats another.

Front

What is a food web?

Back

A complex network of feeding relationships among various organisms in an ecosystem.

Front

What role do consumers play in an ecosystem?

Back

Consumers are organisms that cannot produce their own food and must eat other organisms for energy.