7.2 Ecological Succession

The picture display which type of succession?

• primary

• secondary

• tertiary

• all of the above

The picture displays which type of succession?

• primary

• secondary

• tertiary

• all of the above

After a volcanic eruption, volcanic rock is present (but no soil). Which of the following states the most likely order of succession that would be seen?

• Lichens → Shrubs → Grasses → Trees

• Lichens → tree → shrubs→Grasses

• Grasses → Lichens → Shrubs → Trees

• Lichens → Grasses → Shrubs → Trees

Natural disasters such as flooding,forest fires, and tornadoes are associated with which type of succession?

• primary

• secondary

• Gordito

• ecosystem

Why does primary succession typically occur over a longer period of time (as compared to secondary succession)?

• Because trees do not perform respiration

• Because the climax community is usually a forest.

• Because primary succession already has soil

• Because primary succession does not begin with soil being present

What is an example of an area that is likely to undergo primary succession?

• Glaciers melt and leave exposed rock

• Plants die from drought and decompose

• Land is bulldozed and soil remains

• A forest fire occurs

The final stage of ecological succession can typically be observed when evidence of a _____________________ is present.

• Mature Tree Growth

• Climax Community

• Pioneer Community

• housing community

A pioneer species is...

• a large organism
• the first organisms to adapt to a new environment 
• The best organism 
• Abiotic organisms 

What is the most important function of pioneer species?

• To create rocks
• To create soil and add nutrients to the environment 
• To look nice
• Food for animals 

A climax community is ….

• the beginning of a new ecological succession.
• the rocks in a new environment.
• the fire that will cause destruction.
• an area that reaches its greatest growing potential.