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Ch 44: General Science: Community & Population Ecology

About This Chapter

As you prepare for the AEPA General Science certification exam, complete the lessons and assessments of this chapter to prepare for questions about the levels of ecology, species diversity, species interactions and factors that influence populations in an ecosystem.

AEPA General Science: Community & Population Ecology - Chapter Summary

This chapter was assembled to aid in your review of the relationship between different species populations and their ecosystems. Follow along in this series of short, engaging lesson videos and watch our professional instructors explain the levels of an ecosystem, the factors that affect population movement and growth, and social behaviors within populations. Upon finishing, you should be better-prepared for questions on the AEPA General Science certification exam about:

  • Levels of ecology
  • Competition between different species of an ecosystem
  • Importance of species diversity
  • Interactions between predators and prey
  • Differences between mutualism, commensalism and parasitism
  • Relationships between population growth, movement and the ecosystem
  • Migration, colonization and carrying capacity
  • Habitat fragmentation and metapopulations
  • Social behavior within species

These lessons are mobile-device compatible so that you can study them on the go as well as at your desk. They're followed by short quizzes that generally contain no more than five questions in multiple-choice form. The dashboard provides access to a feature that permits you to ask questions of the experts, and you can also track your progress through the chapter.

AEPA General Science: Community & Population Ecology Objectives

Future science teachers take the AEPA General Science certification exam to show their understanding of the sciences as part of their certification process. This computer-based exam is composed of 150 multiple-choice questions which are administered in a three-hour testing session. When you take this exam, you can expect 25% of the material covered to belong to the Life Science domain. This is where you'll find some questions about the relationships between the organisms of an ecosystem and the factors the affect their populations. The lessons of this chapter have been put together to help you review these topics so that you will be able to answer these questions in an effective manner.

10 Lessons in Chapter 44: General Science: Community & Population Ecology
Test your knowledge with a 30-question chapter practice test
The Environment, Levels of Ecology and Ecosystems

1. 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.

Interspecific Competition, Competitive Exclusion & Niche Differentiation

2. 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.

What is Species Diversity? - Definition, Importance & Examples

3. What is Species Diversity? - Definition, Importance & Examples

Have you ever wondered how many species live on Earth? Earth is full of amazing creatures. In this lesson, you will learn about the importance of species diversity. At the end, test your knowledge with a quiz.

Predator/Prey Interactions, Camouflage, Mimicry & Warning Coloration

4. 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

5. 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

6. 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.

Carrying Capacity, Migration & Dispersion

7. Carrying Capacity, Migration & Dispersion

Have you ever wondered why some types of birds fly south in the winter or why some animals form territories? Watch this video to learn about a species' maximum growth capabilities, the way its members group themselves and why they might migrate to new locations every year.

Dispersal, Colonization, and Island Biogeography

8. 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.

Conservation Biology, Habitat Fragmentation, and Metapopulations

9. Conservation Biology, Habitat Fragmentation, and Metapopulations

It's becoming harder to conserve large, unbroken tracts of wilderness. Is there another way for conservation biologists to ensure the survival of a species? In this lesson, you'll learn about habitat fragmentation and metapopulations.

Social Behavior: Agonistic, Dominance Hierarchies, & Territoriality

10. Social Behavior: Agonistic, Dominance Hierarchies, & Territoriality

Instead of using words, animals communicate with each other through social behaviors. These actions between individuals may be used to establish rank, defend home and breeding sites, and compete for resources.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
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 within the AEPA General Science (NT311): Practice & Study Guide course

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