2.7 Stages of Primary Succession

Which is an example of a abiotic factor?

• predators

• sunlight

Organisms like lichens that can colonize bare rock and start producing soil are ___ species.

• competitive

• pioneer

• climax

What does lichen do to rock?

• break it down to create soil

• Pick it up and move it to access the soil underneath

When does primary succession occur?

• when there is no soil present

• when there is soil present

What types of plants can grow on old lava flows?

• trees and bushes

• early colonizers

Which of the characteristics is shown by trees growing in the mature forest?

• shade tolerant

• wind dispersed

• can grow on rock without soil

• fast growing