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Ch 22: Praxis Biology: Classification of Organisms

About This Chapter

Look to this biology chapter for help with your Praxis II Biology Content Knowledge exam review. The engaging video lessons with quick quizzes can help you understand how all living organisms are classified and how they reproduce.

Praxis Biology: Classification of Organisms - Chapter Summary

You can review the differences between living and non-living things for the Praxis II Biology Content Knowledge exam with this chapter. Use the lessons to refresh your memory of how living things are classified and the methods of depiction. This chapter reveals the evolutionary histories of plants, fungi, animals and humans, along with a group of organisms that falls into the first three in that list. All of the following topics are included in these lessons:

  • Qualities of living and non-living things
  • Taxonomy and binomial nomenclature
  • Definition and characteristics of prokaryotes and protists
  • Evolution classifications of fungi, plants, animals and humans
  • How viruses are classified
  • Types of reproduction or replication for various organisms

Each lesson offers a video, transcript and quiz. You can use the lessons as many times as you like and can easily find specific topics in the videos with the handy video tags. Many lessons also provide additional links to text lessons for further clarification.

Praxis Biology: Classification of Organisms Objectives

The Praxis II Biology Content Knowledge exam has 150 questions covering six content areas. The Diversity of Life, Plants and Animals portion of the Praxis exam analyzes your understanding of the topics listed above with about 45 questions that constitute about 30% of the test. All the questions on the entire test are multiple-choice, and our quizzes can help you prepare for the style of questions you'll find on the test.

13 Lessons in Chapter 22: Praxis Biology: Classification of Organisms
Test your knowledge with a 30-question chapter practice test
The Defining Characteristics of Living Organisms

1. The Defining Characteristics of Living Organisms

A house is not a living thing, but the people, animals, and plants living inside it are. So how do we define 'life'? Learn about seven characteristics that all living organisms have in common, no matter how different they may look on the outside.

Taxonomy: Classification and Naming of Living Things

2. 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.

Cladograms and Phylogenetic Trees: Evolution Classifications

3. Cladograms and Phylogenetic Trees: Evolution Classifications

Family trees help show how people are related to each other. Similarly, scientists use cladograms and phylogenetic trees to study the relationships between organisms.

The Evolution of Prokaryotes: Archaebacteria and Eubacteria

4. 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

5. 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

6. 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

7. 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

8. 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.

What Are Viruses? - Definition, Structure & Function

9. What Are Viruses? - Definition, Structure & Function

In this lesson, you'll learn some historical facts about viruses and the material they are composed of. Find out more as we review the capsid, nucleic acids, the viral envelope, viruses, virions, bacteriophages and virology.

Classification of Viruses: Viral Genome and Replication Scheme

10. Classification of Viruses: Viral Genome and Replication Scheme

Find out how viruses are classified based on their being double-stranded, single-stranded, positive-sense, negative-sense, or by having something called reverse transcriptase.

Asexual vs. Sexual Reproduction: Comparison & Characteristics

11. Asexual vs. Sexual Reproduction: Comparison & Characteristics

Did you know that some organisms can reproduce without a mate? Check out this video lesson on asexual versus sexual reproduction to discover the different ways organisms can reproduce and the main differences between mitosis and meiosis.

Growth, Reproduction & Dynamic Homeostasis in Organisms

12. Growth, Reproduction & Dynamic Homeostasis in Organisms

What makes something a living thing? In this lesson, you will refresh your knowledge of three important features of living things -- growth, reproduction, and homeostasis.

Evolution of Invertebrates: Symmetry & Specialization

13. Evolution of Invertebrates: Symmetry & Specialization

If you think you can avoid invertebrates, think again! These guys are everywhere, and through evolution many have developed into complex creatures. Let's explore these developments and how they can be beneficial to these world-dominating animals.

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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