Biology Semester Exam Review (1)

Front

What is a moraine?

Back

A moraine is the rocky material left behind by a retreating glacier.

Front

Which life-form helps create soil by breaking down bare rock during primary succession on a moraine?

Back

Lichens help create soil by breaking down bare rock.

Front

What is a community in ecological terms?

Back

A community is a group of different species living and interacting in the same area.

Front

What happens to the plant population if the rabbit population increases?

Back

The plant population will likely decrease.

Front

What is lost to the environment at each trophic level of an ecosystem?

Back

Heat is lost to the environment at each trophic level.

Front

What is primary succession?

Back

Primary succession is the process of ecological change that occurs in an area where no soil exists, such as on bare rock.

Front

What role do lichens play in primary succession?

Back

Lichens help in soil formation by breaking down rock and contributing organic material.

Front

Define a food web.

Back

A food web is a complex network of feeding relationships among organisms in an ecosystem.

Front

What is the difference between a food chain and a food web?

Back

A food chain is a linear sequence of organisms through which nutrients and energy pass, while a food web is a more complex network of interconnected food chains.

Front

What is an ecosystem?

Back

An ecosystem is a community of living organisms interacting with their physical environment.