Ecological Succession quiz

What is ecological succession?

• When nature wins over humanity

• When trees win over bushes and grasses

• The changes that occur to an ecosystem over a long period of time

• When humans cut down a forest to build cities

Which type of succession takes longer, primary or secondary? Why?

• Primary, because the soil is already present

• Secondary, because the soil is already present

• Primary, because the plants have to wait for the soil to be made

• Secondary, because the plants have to wait for the soil to be made

Which type of succession is the picture depicting?

• Primary

• Secondary

• Both

• Neither

What are the 2 pioneer species that that are the first to show up to start primary succession?

• Bare rock

• Grasses/ferns

• Mosses/lichens

• Bushes/shrubs

Volcanoes and glaciers can provide access to __________, which is the starting point of primary succession.

• Bare rock

• Mosses/lichens

• Soil

• Plants

As long as the _________ is still intact, then secondary succession can occur.

• Rocks

• Mosses/lichens

• Trees

• Soil

When an ecosystem has enough biodiversity that it becomes stable, it is called a _____________.

• Biome

• Forest

• Climax community

• Pioneer species

How do pioneer species start primary succession?

• They create the bare rock

• The are the first plants to start growing in the soil

• They break down rocks to create soil for plants to grow in

• Pioneer species don't start primary succession

If the soil is already present at the beginning of secondary succession, why aren't trees the first thing to grow back fully mature?

• Because trees take longer to grow fully mature

• Because the seeds can't grow in the soil

• The grass/weeds are taking all of the nutrients, water, and sunlight

• Trees can't grow back

Which of the following explains why, as the soil gets deeper, the species of plants seem to get taller?

• The grass grows into trees

• The deepers soil allows the bigger plants to finally start growing because they can get enough nutrients

• The seeds of the bigger plants were never in the shallow soil

• The seeds of the bigger plants were buried deep under the bare rock