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Ch 32: Ecology & Biodiversity

About This Chapter

The lessons in this chapter can help you gain a better understanding of ecology and biodiversity. The short quizzes that follow each lesson give you practice for exams and can help you get a higher score.

Ecology & Biodiversity - Chapter Summary

This chapter helps you review ecology and biodiversity. You'll look at what makes up the environment and explore the difference between the environment and an ecosystem. You'll also take a look at the definition of a habitat, the interactions between populations of organisms, the importance of abiotic factors in nature and how biotic factors affect organisms. By the end of the chapter, you should be able to:

  • Describe what happens when organisms are forced to deal with changes
  • Explain various plant adaptations
  • Detail how organisms survive in extreme environments
  • Identify why diversity of organisms is important for maintaining healthy ecosystems
  • Analyze the factors that influence species richness
  • Determine what may influence population size of a species
  • Relate what field studies look like and how they differ from lab studies

You can review lessons any time and in any order that works best for you. If at any point you find yourself stuck on any information, you can ask our knowledgeable instructors for help and they can answer any questions you might have. You can access these resources at any time on a home computer or a mobile device.

12 Lessons in Chapter 32: Ecology & Biodiversity
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.

What Is Habitat? - Definition & Explanation

2. What Is Habitat? - Definition & Explanation

Most people would agree that there's no place like home. In this lesson, we'll examine the biological version of a home, known as a habitat. It's important for us to know what makes up our habitat as well as other organisms' habitats.

Community Ecology: Definition & Types

3. 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.

Abiotic Factors of an Ecosystem: Definition & Examples

4. 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.

What is Biotic? - Definition, Factors & Examples

5. 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.

Environmental Changes & Adaptation in Organisms

6. Environmental Changes & Adaptation in Organisms

In this lesson, we will discuss what happens when an organism is forced to deal with environmental changes. You will learn what adaptation is and how organisms benefit from it.

Plant Adaptations: Types & Examples

7. Plant Adaptations: Types & Examples

View this lesson and you will see how many unique plants we have in the world. Learn how aquatic plants survive underwater and how desert plants survive in dry conditions.

Extremophiles: Definition & Examples

8. Extremophiles: Definition & Examples

Extremophiles live in conditions outside the moderate environments that most life requires. From high-temperature, deep sea vents to freezing, polar oceans, we'll explore life in some of the most extreme environments on Earth.

What is Biodiversity? - Definition and Relation to Ecosystem Stability

9. What is Biodiversity? - Definition and Relation to Ecosystem Stability

Imagine making a list of all of the species you have ever heard of; it would be an enormous list! There are many different species on this planet. This lesson will explore the diversity of species, as well as the different types of diversity and how diversity of life is essential for maintaining healthy ecosystems.

Species Richness: Definition & Determining Factors

10. Species Richness: Definition & Determining Factors

In this lesson, you'll learn what species richness is and what factors can influence the index of species richness. You'll also discover why it is an important index to measure in terms of conservation.

Factors that Affect Animal Population Size

11. Factors that Affect Animal Population Size

In this lesson, you will learn about the many factors that may influence animal population size, such as nutrition, competition, and even things like parasitism.

Techniques for Field Studies

12. Techniques for Field Studies

Not all science can be done in labs. Especially in the field of biology, research often requires leaving the lab. In this lesson we check out basic techniques for field studies and see what science looks like outside the lab.

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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