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Ch 16: AP Science - Interaction Among Organisms: Help & Review

About This Chapter

The Interaction Among Organisms in the Ecosystem chapter of this AP Environmental Science Help and Review course is the simplest way to master the interaction among organisms in the ecosystem. This chapter uses simple and fun videos that are about five minutes long, plus lesson quizzes and a chapter exam to ensure students learn the essentials of interaction among organisms in the ecosystem.

Who's it for?

Anyone who needs help learning or mastering AP environmental science material will benefit from taking this course. There is no faster or easier way to learn AP environmental science. Among those who would benefit are:

  • Students who have fallen behind in understanding symbiotic relationships or conservation biology
  • Students who struggle with learning disabilities or learning differences, including autism and ADHD
  • Students who prefer multiple ways of learning science (visual or auditory)
  • Students who have missed class time and need to catch up
  • Students who need an efficient way to learn about the interaction among organisms in the ecosystem
  • Students who struggle to understand their teachers
  • Students who attend schools without extra science learning resources

How it works:

  • Find videos in our course that cover what you need to learn or review.
  • Press play and watch the video lesson.
  • Refer to the video transcripts to reinforce your learning.
  • Test your understanding of each lesson with short quizzes.
  • Verify you're ready by completing the Interaction Among Organisms in the Ecosystem chapter exam.

Why it works:

  • Study Efficiently: Skip what you know, review what you don't.
  • Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
  • Be Ready on Test Day: Use the Interaction Among Organisms in the Ecosystem chapter exam to be prepared.
  • Get Extra Support: Ask our subject-matter experts any interaction among organisms in the ecosystem question. They're here to help!
  • Study With Flexibility: Watch videos on any web-ready device.

Students will review:

This chapter helps students review the concepts in an interaction among organisms in the ecosystem unit of a standard AP environmental science course. Topics covered include:

  • Interspecific competition and competitive exclusion
  • Niche differentiation
  • Predator/prey interactions
  • Camouflage, mimicry and warning coloration
  • Mutualism and parasitism
  • Carrying capacity
  • Migration and dispersion
  • Island biogeography
  • Conservation biology
  • Habitat fragmentation and metapopulations
  • Ecological balance alterations due to introduced and invasive species

18 Lessons in Chapter 16: AP Science - Interaction Among Organisms: Help & Review
Test your knowledge with a 30-question chapter practice test
Interspecific Competition, Competitive Exclusion & Niche Differentiation

1. 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

2. 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

3. 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

4. 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

5. 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

6. 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

7. 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.

How Introduced and Invasive Species Alter Ecological Balance

8. How Introduced and Invasive Species Alter Ecological Balance

What happens to your block when a new neighbor moves in? Something changes, right? Now think about that on an ecological scale: what happens to an environment when a new SPECIES moves in?

Parasitism: Examples & Definition

9. Parasitism: Examples & Definition

Parasitism describes a relationship between two organisms where one is harmed, and the other benefits. Learn about the different types of parasitism and examples of each.

Mutualistic Relationships: Examples & Types

10. Mutualistic Relationships: Examples & Types

In this lesson, you will explore a type of symbiotic relationship, mutualism. This describes the interaction between two organisms where both benefit from the relationship. You will also learn several examples of different types of mutualistic relationships.

What Are Nematodes? - Definition, Properties & Examples

11. What Are Nematodes? - Definition, Properties & Examples

Nematodes are roundworms that are found in every environment on Earth. While some species are harmful parasites, others play a vital role in nutrient cycling and medical research.

Body Symmetry in Nematodes

12. Body Symmetry in Nematodes

The phylum Nematoda is a diverse and abundant one on Earth. In this lesson, you'll learn about the type of body symmetry that these roundworms exhibit.

Nematode Symmetry & Movement

13. Nematode Symmetry & Movement

We are going to get an understanding of the type of symmetry nematodes display. This lesson is also going to talk about how nematodes produce movement.

Nematode Circulatory System

14. Nematode Circulatory System

Why do living things pump blood throughout their bodies? What purpose does the circulatory system serve? This lesson investigates circulation in nematodes, the most numerous worms on Earth. A brief quiz and summation are included.

Nematode Nervous System

15. Nematode Nervous System

Nematodes, or roundworms, are a diverse and interesting group of animals. In this lesson, you'll learn about their simple nervous system, which helps the worm move and react to its environment.

Nematode Reproductory System

16. Nematode Reproductory System

Like other animals, nematodes, or roundworms, need to reproduce to pass on their genetic information to the next generation. In this lesson we'll discuss the reproductive system of nematodes. You might be surprised at what you learn!

Nematode Respiratory System

17. Nematode Respiratory System

This lesson investigates the respiratory system of nematodes. It discusses how these organisms exchange gases with the atmosphere despite their lack of lungs, trachea, and other respiratory anatomy commonly found in other animals.

Phylum Nematoda: Classes, Characteristics & Examples

18. Phylum Nematoda: Classes, Characteristics & Examples

With 25,000 species discovered and an estimated 900,000 waiting to be discovered, phylum Nematoda is one the most species-rich phyla in the animal kingdom. This lesson discusses this and many other interesting facts about these tiny worms.

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

Other chapters within the AP Environmental Science: Help and Review course

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