Symbiosis/ trophic levels

What is ecological succession?

• A slow change in an environment
• A change that takes days in an environment
• No change
• Abiotic change

A pioneer species is...

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

A large tree forest is an example of ...

• a small community
• a abiotic community
• a climax community
• a pioneer species 

Climax communities are always large forests. (Hint; think of a desert environment) 

• True 
• False

Which is the correct order in primary succession?

• Rocks, Lichens & Mosses, Bushes & Shrubs, Trees
• Lichens & Mosses, Rocks, Trees, Bushes & Shrubs 
• Trees, Bushes and Shrubs, Lichens & Mosses, Lichens & Mosses
• Rocks, Grass, Trees, Bushes & Shrubs

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 

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 are examples of pioneer species in a primary succession?

• Bushes and Shrubs

• Oak trees

• Mosses and Lichens

• A rose Bush

What is the first species you will see in the early stages of primary succession? (in picture)

• lichens
• grasses
• small plants

Final illustration (#8) shows a

• pioneer species
• climax community
• only biotic factors
• only abiotic factors