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Ch 20: OAE - Integrated Science: Ecological Systems

About This Chapter

Ohio requires its science teachers to take the OAE Integrated Science exam. Our study guide will help you review everything you need to know for the test. This chapter will focus on ecological systems, and it will give you a chance to take practice tests.

OAE Integrated Science: Ecological Systems - Chapter Summary

This chapter will help you recall the various parts of an ecological system as you get ready for the OAE Integrated Science exam. It will discuss biomes, ecosystems, habitats, and more. It will also provide an overview of the various relationships between living and nonliving things within an ecological system. When you finish this chapter, you will have reviewed:

  • Factors and examples of biotic
  • The environment
  • Food chains, trophic levels, and energy flow
  • Symbiotic and predator/prey interactions
  • Population density and life histories
  • The producers, consumers, and decomposers of ecological systems
  • Abiotic factors in an ecosystem
  • Community ecology
  • Dispersal and colonization

These lessons each have practice quizzes that are similar to the test you will soon take. By studying with our exciting instructors and then taking our practice tests, you will be able to more easily pass your upcoming exam.

Objectives of the OAE Integrated Science: Ecological Systems Chapter

The computer based OAE Integrated Science exam has four domains of tested knowledge: life science, earth science, physical science, and the nature of science. This chapter is part of the life science section of the exam. The life science domain accounts for 25% of the 150 multiple-choice questions. You have 180 minutes to answer the 150 questions, so it is important to be familiar with the question types so you can quickly answer each.

14 Lessons in Chapter 20: OAE - Integrated Science: Ecological Systems
Test your knowledge with a 30-question chapter practice test
What Is a Biome? - Definition & Types

1. What Is a Biome? - Definition & Types

If you travel around the world, you can visit dry deserts with lots of cacti, the cold arctic with little plant life, or humid tropical rainforests. These different regions on Earth are all called biomes. Continue reading to learn about different types of biomes.

The Environment, Levels of Ecology and Ecosystems

2. The Environment, Levels of Ecology and Ecosystems

Do you know the difference between an environment and an ecosystem? In this lesson, you'll find out what makes an environment, and what makes an ecosystem. You'll also learn what ecology is and some of the ways that scientists study ecology using organisms, populations, communities, ecosystems and even the entire biosphere.

Producers, Consumers & Decomposers in Ecosystems

3. Producers, Consumers & Decomposers in Ecosystems

In this lesson we will learn about producers, consumers, and decomposers. Find out what they are and how they interact with one another in the ecosystem.

What is Biotic? - Definition, Factors & Examples

4. What is Biotic? - Definition, Factors & Examples

In this lesson you will learn about the biotic components in an ecosystem and the biotic factors that affect organisms. You will also have a better understanding about why planet Earth is a pretty special place.

Abiotic Factors of an Ecosystem: Definition & Examples

5. Abiotic Factors of an Ecosystem: Definition & Examples

When it comes to ecosystems, a mountain, a river, and a cloud have more in common than you might think. Abiotic factors have specific and important roles in nature because they help shape and define ecosystems.

Community Ecology: Definition & Types

6. Community Ecology: Definition & Types

Community ecology looks at the interactions between populations of organisms. Here we explore a polar ecosystem in Greenland to describe what community ecology entails and what it really means to be at the top of the food chain.

Ecosystems, Habitats and Ecological Niches

7. Ecosystems, Habitats and Ecological Niches

Check out this video lesson to understand the many complex aspects of an ecosystem. See how animals live in habitats and survive amongst their surroundings.

Food Chains, Trophic Levels and Energy Flow in an Ecosystem

8. Food Chains, Trophic Levels and Energy Flow in an Ecosystem

In this lesson, you'll learn about food chains, food webs, and the different roles that organisms play in an ecosystem. You'll also learn about how energy flows through an ecosystem.

Interspecific Competition, Competitive Exclusion & Niche Differentiation

9. Interspecific Competition, Competitive Exclusion & Niche Differentiation

What happens when two similar species that consume the same resources occupy the same space? Interspecific competition, that's what! Watch our video lesson to learn about the outcomes of this ecological battle.

Predator/Prey Interactions, Camouflage, Mimicry & Warning Coloration

10. Predator/Prey Interactions, Camouflage, Mimicry & Warning Coloration

You probably know that skunks can be quite stinky, bees sting and monarch butterflies are pretty, but do you know why? This lesson will introduce you to the reasons why some animals look or act the way they do and how these things relate to the predator/prey relationship.

Symbiotic Relationships: Mutualism, Commensalism & Parasitism

11. Symbiotic Relationships: Mutualism, Commensalism & Parasitism

If your cat or dog has ever had fleas, you've witnessed symbiosis in action. In this lesson, learn the many types of symbiosis in biology, and how these relationships can have a positive, negative, or neutral effect on the individual species.

Populations: Density, Survivorship and Life Histories

12. Populations: Density, Survivorship and Life Histories

Have you ever wondered how biologists determine the populations of animals in a particular geographic area? Watch this video lesson to find out, and discover how scientists look at the survivorship and life histories of many different species.

Dispersal, Colonization, and Island Biogeography

13. Dispersal, Colonization, and Island Biogeography

Have you ever gone in your backyard and discovered a wild raspberry bush that has never been there before? How did it get there? Why is there only one bush year after year? In this lesson, you'll study how plant and animal species colonize in new areas through dispersal and immigration and how some species thrive in a new area while others fail.

Ecological Succession: From Pioneer to Climax Communities

14. Ecological Succession: From Pioneer to Climax Communities

Just as people grow and change so, too, do ecosystems. Watch this lesson to learn about ecological succession from the beginning stages of development to a community's ultimate destination, or climax.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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Other Chapters

Other chapters within the Ohio Assessments for Educators - Integrated Science (024): Practice & Study Guide course

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