How Ecosystems Change

Multiple Choice

Primary succession occurs in an area that has:

• Has Soil

• Has No Soil

• Has Some Soil

• none of these

Multiple Choice

What is the main difference between primary and secondary ecological succession?

• Primary begins WITHOUT soil; Secondary begins WITH soil

• Primary is the first state and secondary is the second stage

• Primary builds plant community; secondary builds animal community.

• Primary begins WITH soil; Secondary begins WITHOUT soil

Multiple Choice

___ are the first organisms to colonize an area and begin the process of ecological succession.

• foundational organisms

• introductory organisms

• primary organisms

• pioneer species

Multiple Choice

Which of the following is the correct order of ecological succession?

• grass - shrubs - lichens - trees

• lichens - shrubs - grasses - trees

• lichens - grasses - shrubs - trees

• grasses - lichens - shrubs - trees

Multiple Choice

What is an increase of biodiversity over time, after a natural or man made disturbance?

• ecological recession

• climax recession

• ecological succession

• climax succession

Multiple Choice

What is an example of a disturbance that could bring about secondary succession?

• Humans cut down many trees in a small region

• A volcanic eruption covers a village in lava.

Multiple Choice

Which is faster: Primary or Secondary Succession?

• Primary Succession

• Secondary Succession

• Both Take The Same Amount of Time

Multiple Choice

Lichen is an example of a __________

• Last Species

• Pioneer Species

• Colonizing Species