Ch 4: Holt McDougal Environmental Science Chapter 4: The Organization of Life

About This Chapter

The Organization of Life chapter of this Holt McDougal Environmental Science Companion Course helps students learn the essential lessons associated with the organization of life. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the Organization of Life textbook chapter.

How It Works:

  • Identify the lessons in the Holt McDougal Organization of Life chapter with which you need help.
  • Find the corresponding video lessons with this companion course chapter.
  • Watch fun videos that cover the organization of life topics you need to learn or review.
  • Complete the quizzes to test your understanding.
  • If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.

Students will learn:

  • Kinds of ecology
  • Natural selection types
  • What artificial selection is
  • How living things are classified
  • The characteristics of bacteria and fungi
  • The life cycles of gymnosperms and angiosperms
  • Characteristics of vertebrates and invertebrates

Holt McDougal is a registered trademark of Houghton Mifflin Harcourt, which is not affiliated with Study.com.

11 Lessons in Chapter 4: Holt McDougal Environmental Science Chapter 4: The Organization of Life
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.

Natural Selection & Adaptation: Definition, Theory & Examples

2. Natural Selection & Adaptation: Definition, Theory & Examples

How does natural selection help shape the amazing types of animals we witness around us? In this lesson, we'll explore adaptations and what they can tell us about a species' past evolution.

Natural Selection: Definition, Types & Examples

3. Natural Selection: Definition, Types & Examples

We'll take a look at the types of natural selection that can occur. From flying hamsters to moths, you'll start to grasp the different paths organisms can take as they respond to their changing environments over time.

Artificial Selection in Evolution

4. Artificial Selection in Evolution

Humans have been selectively breeding for desirable traits in plants and animals for a long time. This artificial selection allows for a lot of control in the breeding process but can also lead to unintended mutations within a population of organisms.

Taxonomy: Classification and Naming of Living Things

5. Taxonomy: Classification and Naming of Living Things

The name you give to a living thing may be completely different than the name someone else uses. In science, we use a common naming system for all living things to avoid confusion. This lesson will explore the basics of our classification system.

What is Bacteria? - Definition, Characteristics & Examples

6. What is Bacteria? - Definition, Characteristics & Examples

This lesson will introduce the Bacteria, a large and diverse group of microorganisms. We will examine several key characteristics, as well as a few commonly known examples of bacterial species.

What are Fungi? - Types and Characteristics

7. What are Fungi? - Types and Characteristics

In this lesson, we will examine the group of organisms known as the fungi. This group includes the familiar organisms mushrooms, yeasts and molds. We will look at several major characteristics of fungi, as well as a few disease-causing fungi.

A Gymnosperm Life Cycle: Reproduction of Plants with 'Naked Seeds'

8. A Gymnosperm Life Cycle: Reproduction of Plants with 'Naked Seeds'

Some plants, such as pine trees, are able to reproduce with unprotected seeds. We will look at the major structures involved in this form of alternation of generations in gymnosperms.

An Angiosperm Life Cycle: Flowering Plant Reproduction

9. An Angiosperm Life Cycle: Flowering Plant Reproduction

When you think of how plants reproduce, you probably think of flowers. We will look at how flowering plants use specialized reproductive structures to complete an alternation of generations life cycle.

Vertebrates: Origin, Characteristics & Diversity

10. Vertebrates: Origin, Characteristics & Diversity

Vertebrates are diverse and widespread across Earth, but this was not always the case. In this lesson you'll learn about the origins and evolution of these animals, as well as explore their vast diversity.

Invertebrates: Definition & Examples

11. Invertebrates: Definition & Examples

From bees to lobsters and octopi to cockroaches, invertebrates are everywhere. This lesson introduces them as a major group within biology and discusses their relationship with the human race.

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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