IB Biology Ecology

Which catastrophic event will most likely have the effect of returning an ecosystem to primary succession?

• A tornado

• A volcanic eruption

• A flood

• A drought

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which experiences the least change over time?

• Pioneer Species

• Primary Succession

• Aquatic Succession

• Climax Community

Which of the following best describes primary succession?

• Volcano wipes out ecosystem that gradually grows back from ash covered soil

• Volcano creates a new island of rock that must break down to form an ecosystem

• Forest fire burns down forest that must bounce back over time

• Tornado destroys a crop that must slowly grow back over time.

What term could be described as an equilibrium?

• pioneer species

• primary succession

• secondary succession

• climax community

If farmers use a controlled burn to prevent forest fires, what would most likely be the first plants to return?

• trees

• shrubs

• mosses

• grasses

Which progression best explains secondary succession?

• lichens>grass>shrubs>small trees> big trees

• mosses>creates soil>grasses>small trees> big trees

• Volcano destroys ecosystem>grasses>shrubs>small trees>big trees

• Volcano forms new island> lichens>grasses>shrubs>small trees>big trees

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

In 2015 you visited a forest, when you returned in 2019 there was only small plants. What is the most likely thing to have happened?

• passing of a glacier

• preservation of a habitat

• occurrence of a forest fire

• development of a parking lot

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which of the following is the correct aquatic succession stages?

• Full ecosystem>trees>shrubs>fish and aquatic animals>plants> water only

• Water only>small plants and animals>sediment builds> pond fills with soil

• fire>grass>shrubs>trees

• bare rock>lichens>grasses>shrubs>trees

Tags

NGSS.MS-LS2-2

Primary succession occurs in areas with:

• very little soil

• lots of soil

• no soil

• soil that has been disturbed

What best describes the term succession?

• rapid changes that create an ecosystem overnight

• gradual changes over time to fully create or restore and ecosystem

• forest with the tallest trees

• the rate species produce offspring