Ecological Succession

If a fire occurs and completely destroys this area, how long will it take to reestablish the pine trees?

• 1

• 2

• 3-4

• Over 5

Which of the following events does not trigger an ecological succession?

• Hurricane

• Forest fire

• River flooding

• Changing seasons

After bushes and tree seedlings began to grow. Describe what you think would happen next?

• It will stay this way unless disturbed

• A volcano erupts

• Larger trees grow and larger animals move into the area

• Lichens and mosses grow on bare rock

What is the final step of primary succession

• Primary

• Secondary

• Tertiary

• Climax community

What effects would you expect to see following a hurricane?

• loss of beach sand

• flooding

• destroyed plants

• all of the above

what would the correct sequence of secondary succession be after the eruption?

• WYXZ

• XYWZ

• ZXYW

• ZXWY

Primary succession takes place in an area where

• no soil or organisms were previously present.

• wildfires removed existing prairie grass species

• large organisms out compete smaller organisms

• weeds grow in a garden next to vegetables.

A flood will have a greater effect on a habitat than a heavy rainfall event because a flood –

• is followed by strong winds that greatly affect a habitat

• strikes more quickly, not allowing organisms to move away or migrate

• brings salt and other substances that harm plants

• happens more often and lasts much longer

Tornadoes are catastrophic events that create change in ecosystems in which of the following ways?

• Heavy flooding increases areas where trees can grow

• High winds damage areas of important plant life

• Wildfires started by lightning reduce carbon dioxide

• Salt water kills many ground-dwelling animals

A drought would MOST LIKELY cause a herd of wildebeests to

• migrate farther than usual

• become more horse-like

• begin to prey on lions

• produce larger herds