Biology Chapter 3 Review- Communities, Biomes, and Ecosystems

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 after a volcanic eruption. It begins with bare rock, followed by colonization by lichens, small annual plants, perennial herbs and grasses, and eventually trees.

Front

List the correct order of species colonization in primary succession on a volcanic island.

Back

bare rock, lichens, small annual plants, perennial herbs and grasses, shade-intolerant trees

Front

Which biome is characterized by being covered with ice most of the year?

Back

Tundra

Front

Define a biome.

Back

A biome is a large region characterized by a specific type of climate and certain types of plant and animal communities.

Front

What is a community in ecological terms?

Back

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

Front

What is secondary succession?

Back

Secondary succession is the process of ecological change that occurs in an area where a disturbance has destroyed an existing ecosystem but soil and some organisms still remain.

Front

Provide an example of secondary succession.

Back

Plants grow in an area devastated by a flood.

Front

What is an ecosystem?

Back

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

Front

What role do lichens play in primary succession?

Back

Lichens are often the first organisms to colonize bare rock, helping to break it down and create soil.

Front

What is the difference between a population and a community?

Back

A population consists of individuals of the same species living in a specific area, while a community includes different populations of various species interacting in that area.