Test 1.3-Changes in Ecosystems 2024

Front

What is secondary succession?

Back

Secondary succession is the process of ecological change that occurs in an area where a disturbance has destroyed an existing ecosystem but left the soil intact.

Front

What is the first stage of succession after a glacier retreats?

Back

The first stage is bare rock being left behind.

Front

What organisms typically colonize bare rock during succession?

Back

Lichens and mosses are the first organisms to colonize bare rock, helping to create soil.

Front

What type of plants usually follow lichens and mosses in succession?

Back

Weeds and other fast-growing plants typically follow lichens and mosses.

Front

What is the role of grasses and small shrubs in ecological succession?

Back

Grasses and small shrubs replace weeds as the ecosystem matures.

Front

What is carrying capacity in an ecosystem?

Back

Carrying capacity is the maximum number of individuals of a species that an environment can sustainably support.

Front

Which population is likely to reach carrying capacity first after a disturbance?

Back

Turtles are likely to be the first population to reach the ecosystem’s carrying capacity after a disturbance.

Front

What happens to organisms when grassland is converted to tilled farmland?

Back

Many organisms that once lived in the grassland will die or move to a new location.

Front

What does it mean for an ecosystem to be resistant?

Back

An ecosystem is resistant if it can withstand disturbances without significant changes to its structure or function.

Front

What does it mean for an ecosystem to be resilient?

Back

An ecosystem is resilient if it can recover quickly after a disturbance.