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Ecological Concepts and Succession

Ecological Concepts and Succession

Assessment

Interactive Video

Biology, Science, Geography

9th - 10th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video discusses changes in ecosystems, focusing on community stability, biodiversity, and succession. It explains how complex, biodiverse communities are more stable and resilient to changes. The video covers primary and secondary succession, highlighting the role of pioneer and climax communities. It also addresses human impacts on succession and the edge effect, which increases vulnerability to invasive species and habitat fragmentation.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is one of the key factors that contribute to the stability of an ecosystem?

Low biodiversity

High resistance and resilience

Simple food chains

Limited species interactions

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does human activity typically affect biodiversity in high population centers?

It stabilizes biodiversity

It reduces biodiversity

It has no effect on biodiversity

It increases biodiversity

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary difference between primary and secondary succession?

Primary succession is faster than secondary

Primary succession starts with soil, secondary does not

Secondary succession occurs in aquatic environments

Primary succession starts with rock, secondary starts with soil

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of species is typically the first to colonize an area during primary succession?

Invasive species

K-selected species

Pioneer species

Climax species

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What role do lichens play in primary succession?

They provide shade for other plants

They break down rocks to form soil

They compete with grasses for sunlight

They prevent soil erosion

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why are some ecosystems dependent on forest fires?

To increase biodiversity

To prevent soil erosion

To facilitate succession

To reduce carbon emissions

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the edge effect in ecology?

The increase in biodiversity at the center of a habitat

The stabilization of ecosystems due to human intervention

The decrease in species diversity at habitat edges

The changes in species composition at the boundary of two habitats

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