Ecology Review

Front

Which of the following best describes symbiosis?

• The process by which plants produce their food
• A relationship between two species where at least one benefits
• The transfer of energy from one organism to another
• A series of steps in an ecosystem where organisms transfer energy by eating and being eaten

Back

A relationship between two species where at least one benefits

Front

In a food chain, what role do plants typically play?

Back

Producers

Front

What is an example of a food web?

Back

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

Front

What is the first stage of ecological succession?

Back

Pioneer species

Front

Which part of the nitrogen cycle involves bacteria converting nitrogen gas into ammonia? Options: Nitrification, Nitrogen fixation, Denitrification, Ammonification

Back

Nitrogen fixation

Front

Mutualism is a type of symbiosis where:

Back

Both organisms benefit

Front

In a food chain, what is the term for organisms that break down dead material and return nutrients to the soil?

Back

Decomposers

Front

Difference between a food chain and a food web?

Back

A food web shows multiple pathways of energy flow, while a food chain shows a single pathway.

Front

When does secondary succession occur?

Back

In an area where soil remains after a disturbance

Front

During which process are nitrates converted back into nitrogen gas and released into the atmosphere?

Back

Denitrification