Ecological Succession/Flow of Energy Review

What is ecological succession?

• gradual change in living communities that follows a disturbance

• rapid change in a nonliving community

• a change that occurs in a community overnight

• how an ecosystem is changed into livable land for humans

Primary Succession starts with

• a barren area, no soil

• land that was previously inhabited

• already has soil

• a clear cut piece of land

What are examples of pioneer species in a primary succession?

• Bushes and Shrubs
• Oak trees
• Mossess and Lichens 
• A rose Bush

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 

During a forest fire most vegetation (plants) burn. Which ecological succession will take place after a forest fire?

• Primary

• Secondary

After a volcanic eruption the lava cools and becomes rock. Which succession must take place in order for vegetation (plants) to return?

• Primary Succession

• Secondary Succession

What is the order of succession shown in this figure?

• A, B, C, D
• B, A, D, C
• C, D, A, B
• D, A, B, C

What is the name given to lichen or algae after a primary succession?

• pioneer species
• volunteer species
• founder species
• conqueror species

After a volcanic eruption, lava covers the land. What is the order that plants grow to repopulate the area?

• Lichens → Shrubs → Grasses → Trees
• Lichens → tree → shrubs→Grasses
• Grasses → Lichens → Shrubs → Trees
• Lichens → Grasses → Shrubs → Trees