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Ch 21: 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 21: 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

A biome is a large area on Earth with comparable conditions that is defined by temperature and amount of precipitation. Learn the definition and types of biomes that are found across the globe.

The Environment, Levels of Ecology and Ecosystems

2. The Environment, Levels of Ecology and Ecosystems

Ecology is the study of organisms and how they interact with the environment they live in. Explore ecology principles and the organismal, population, community, ecosystem, and biosphere levels of ecology.

Producers, Consumers & Decomposers in Ecosystems

3. Producers, Consumers & Decomposers in Ecosystems

The food chain in an ecosystem is composed of several species, such as the producers, consumers, and decomposers. Learn about the circle of life in an ecosystem, and understand the roles of producers, consumers, and decomposers in an ecosystem.

What is Biotic? - Definition, Factors & Examples

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

Biotic components within an ecosystem refer to living organisms that have an impact on other organisms in the same area. Learn more about biotic components, including its factors, what abiotic factors are, and examples of how biotic and abiotic factors affect an ecosystem's carrying capacity.

Abiotic Factors of an Ecosystem: Definition & Examples

5. Abiotic Factors of an Ecosystem: Definition & Examples

Abiotic factors are the components of an ecosystem that are non-living. Learn the difference between biotic and abiotic factors, and discover the importance and examples of abiotic factors of an ecosystem.

Community Ecology: Definition & Types

6. Community Ecology: Definition & Types

Community Ecology looks at the relationships and interactions between different species within a biological community. By studying predation, competition, and symbiosis in a polar ecosystem in Greenland, discover what it really means to be at the top of the food chain in this community, as well as your own.

Ecosystems, Habitats and Ecological Niches

7. Ecosystems, Habitats and Ecological Niches

Habitats are areas of the ecosystem where specific organisms live, while niches are the individual roles that organisms play within the ecosystem. Discover factors that affect an animal's niche and how population density impacts an ecosystem.

Food Chains, Trophic Levels and Energy Flow in an Ecosystem

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

Understand how food chains and their trophic levels create energy flow within a food web. Learn about food chains, the trophic levels of food chains, and the amount of energy that flows through a food web.

Interspecific Competition, Competitive Exclusion & Niche Differentiation

9. Interspecific Competition, Competitive Exclusion & Niche Differentiation

When two species within the same environment require the same resources, it creates interspecific competition. Explore how interspecific competition creates competitive exclusion, local extinction, and niche differentiation.

Predator/Prey Interactions, Camouflage, Mimicry & Warning Coloration

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

Understand how predator/prey interactions work. Define predator and prey, understand the different strategies used such as camouflage, mimicry, and warning coloration.

Symbiotic Relationships: Mutualism, Commensalism & Parasitism

11. Symbiotic Relationships: Mutualism, Commensalism & Parasitism

Understand how different species can exist in symbiotic relationships. Learn about the different types of symbiotic relationships: mutualism, parasitism, commensalism, and amensalism.

Populations: Density, Survivorship and Life Histories

12. Populations: Density, Survivorship and Life Histories

The population of organisms in a specific area is affected by different factors that affect the population's survivability rate. Learn about populations, population density, life histories, survivorship, and the external factors that limit the growth of a population.

Dispersal, Colonization, and Island Biogeography

13. Dispersal, Colonization, and Island Biogeography

Dispersal is the spread of organisms to new areas, through immigration and colonization. Explore the effects of this dispersal on habitat fragmentation and island biogeography.

Ecological Succession: From Pioneer to Climax Communities

14. Ecological Succession: From Pioneer to Climax Communities

Changes in a species structure in a ecological community over time is called ecological succession. Explore the two types of ecological succession - primary and secondary - and what pioneer and climax communities are.

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.
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More Exams
There are even more practice exams available in OAE - Integrated Science: Ecological Systems.

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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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