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Ch 7: Classification of Organisms

About This Chapter

Watch video lessons about the classification of living organisms, as well as their characteristics, evolution and importance in life science. Additional lesson features include online self-assessments.

Classification of Organisms - Chapter Summary and Learning Objectives

This series of video lessons, led by an experienced life science teacher, provides a broad overview of how and why living things are classified. Learn more about a dichotomous key, and how it's used. Describe the evolutionary history of key groups of living things. At the end of this chapter, you should be able to:

  • Explain the process of classification and its purpose
  • Define a dichotomous key, and explain how it's used
  • Summarize the evolutionary history of prokaryotes, protists, plants and fungi, animals, and humans

Video Objective
Taxonomy: Classification and Naming of Living Things Define taxonomy and discuss how it's applied to classifying and naming living organisms.
The Dichotomous Key: A Classifying Tool Explain how the dichotomous key is a classifying tool
The Evolution of Prokaryotes: Archaebacteria and Eubacteria Describe the evolution of archaebacteria and eubacteria.
The Evolution of Protists: Importance and Evolutionary History Describe the evolutionary history of protists and why it's important.
The Evolution of Plants and Fungi: Characteristics and Evolutionary History Describe the characteristics of plants and fungi; summarize their evolutionary history.
The Evolution of Animals: Importance and Evolutionary History Describe the evolution of animals and their importance.
The Evolution of Humans: Characteristics and Evolutionary History Describe the characteristics of humans; summarize their evolutionary history.

7 Lessons in Chapter 7: Classification of Organisms
Test your knowledge with a 30-question chapter practice test
Taxonomy: Classification and Naming of Living Things

1. 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.

The Dichotomous Key: A Classifying Tool

2. The Dichotomous Key: A Classifying Tool

Sometimes, the best way to identify an object is to take a step-by-step approach. Dichotomous keys are perfect for this, helping us classify unknown objects through a series of questions and answers that lead us down the correct path.

The Evolution of Prokaryotes: Archaebacteria and Eubacteria

3. The Evolution of Prokaryotes: Archaebacteria and Eubacteria

The first living organisms on Earth were bacteria. These small organisms still exist today and are responsible for many things. In this lesson, we will explore both ancient bacteria and true bacteria.

The Evolution of Protists: Importance & Evolutionary History

4. The Evolution of Protists: Importance & Evolutionary History

Some organisms are very familiar. However, there are some that play vital roles in our lives that we don't even think about. We will look at a group of one of these unfamiliar kingdoms - protists.

The Evolution of Plants and Fungi: Characteristics & Evolutionary History

5. The Evolution of Plants and Fungi: Characteristics & Evolutionary History

In early classification systems, plants and fungi were grouped together. While there are some similarities between these two kingdoms, there are some key differences that we will explore.

The Evolution of Animals: Importance & Evolutionary History

6. The Evolution of Animals: Importance & Evolutionary History

The animal kingdom ranges from simple organisms like sponges to complex organisms like humans. We will look at some defining characteristics of animals as well as examples of both invertebrates and vertebrates.

The Evolution of Humans: Characteristics & Evolutionary History

7. The Evolution of Humans: Characteristics & Evolutionary History

Just like other organisms, humans have changed over time. We will look at the evolution of humans as well as connections with our primate relatives, including Old World and New World primates.

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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