Primary Succession

succession that occurs in an area with no soil

• ecological succession 
• primary succession 
• secondary succession
• pioneer speciles

the first organisms that appear in an ecological community

• ecological succession 
• primary succession 
• secondary succession
• pioneer speciles

How do lichens contribute to primary succession?

• Lichens decompose organic matter from animals and plants
• Lichens begin to break down rock to form soil
• Lichens are nitrogen fixing bacteria

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Why do grasses appear before shrubs in ecological succession?

• loosen the dirt for new trees to take roots?

• provide food for animals returning to the area

• require plenty of sunlight to make their own food

• can grow even in areas with shallow soil

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

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Secondary Succession on land always begin when _______ is still available.

• Rock

• Dirt

• Water

• Wind

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Lichens is a great pioneer species because it can survive with little or no _______.

• Grasses

• Warm Weather

• Soil

• Cold Weather

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

• foundational organisms

• introductory organisms

• primary organisms

• pioneer species

What is the term that describes a steady and stable community?

• peak community

• turf community

• climax community

• disturbed community

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

Tags

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