Exploring Ecological Succession in Animation 19.1

What are the two main types of ecological succession?

• Primary and Secondary

• Initial and Final

• Organic and Inorganic

• Natural and Artificial

Which species typically starts the colonization in primary succession?

• Shrubs

• Lichens

• Grasses

• Mosses

What role do lichens play in primary succession?

• Breaking down rocks

• Forming the climax community

• Attracting animals

• Enriching the soil with humus

What follows the growth of grass and ferns in primary succession?

• Trees immediately grow

• Shrubs become dominant

• Lichens reappear

• Animals become dominant

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

What is a climax community in the context of ecological succession?

• A temporary community

• The final, stable community

• The community before a disturbance

• The initial community

What is the role of humus in ecological succession?

• It blocks sunlight

• It enriches the soil

• It provides food for animals

• It cools the environment

Which of the following is not a stage in primary succession?

• Lichens colonizing rocks

• Animals becoming the dominant species

• Shrubs growing over grass

• Trees growing over shrubs

How does secondary succession differ from primary succession?

• It only involves animals

• It doesn't lead to a climax community

• It's faster due to existing soil

• It starts without soil

What typically triggers secondary succession?

• Glacial retreat

• Forest fire

• Volcanic eruption

• Flood

Tags

NGSS.MS-LS2-4

Why is secondary succession generally faster than primary succession?

• Because it involves fewer species

• Due to existing soil and plant parts

• Because of more sunlight

• Due to harsher conditions