Ch 23: 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.

15 Lessons in Chapter 23: 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

Organisms have traits, or characteristics, that determine they are alive and not simply appearing so. Explore the defining elements that all living things possess: cells, reproduction, growth & development, energy use, stimuli responses, regulation, and evolution.

Levels of Biological Organization

2. Levels of Biological Organization

This lesson is about the organization of living things, or biological organization. Just like it can be helpful to organize your closet, scientists use a classification system to organize living things. This allows for clarity when talking about a species and provides information about an organism, just through the name!

Taxonomy: Classification and Naming of Living Things

3. Taxonomy: Classification and Naming of Living Things

Scientific names are used in taxonomy, the study of naming and classifying living things. Learn more about the characteristics of organisms in the six kingdoms and how the kingdoms are grouped into three domains.

Cladograms and Phylogenetic Trees: Evolution Classifications

4. Cladograms and Phylogenetic Trees: Evolution Classifications

Cladograms and phylogenetic trees are evolution classifications used to demonstrate the genetic relationships of different species of organisms and to show their similarities in physical structure. Learn about the functions of cladograms and phylogenetic trees, and the differences between these two models for evolution classifications.

The Evolution of Prokaryotes: Archaebacteria and Eubacteria

5. The Evolution of Prokaryotes: Archaebacteria and Eubacteria

Learn about the evolution of Prokaryotes and their two domains: archaea and bacteria. The topics covered include the definition and characteristics of prokaryotes, and the difference between archaebacteria and eubacteria.

The Evolution of Protists: Importance & Evolutionary History

6. The Evolution of Protists: Importance & Evolutionary History

Learn about the evolution of protists and their importance. Look at how protists are defined, different types of protists, and why these unique organisms are important.

The Evolution of Plants and Fungi: Characteristics & Evolutionary History

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

The evolution of plants and fungi have both similarities and differences. Discover the evolutionary history and characteristics of plants and fungi in this lesson.

The Evolution of Animals: Importance & Evolutionary History

8. The Evolution of Animals: Importance & Evolutionary History

Animals, including humans, consists of multi-cellular organisms that have undergone an evolution from early life forms. Learn about the characteristics of organisms, their body structures, and the importance of understanding the evolutionary history and characteristics of animals.

Evolution of Invertebrates: Symmetry & Specialization

9. Evolution of Invertebrates: Symmetry & Specialization

Invertebrates are animals without a backbone that can be found in various environments from the land to the sea. Explore invertebrate evolution through the development of symmetry, specialized tissues, and unique heads housing all sensory organs.

Body Temperature Regulation in Animals

10. Body Temperature Regulation in Animals

Animals regulate their temperature using a variety of methods, unique to their own biological needs for survival. Learn the types of temperature regulations and sources of heat that animals typically use for each type.

Coelom: Definition, Formation & Function

11. Coelom: Definition, Formation & Function

A coelom is a cavity found in multicellular organisms that protects the organism's internal organs. This lesson explores the coelom deeper, examining how it is formed as well as its function.

The Evolution of Humans: Characteristics & Evolutionary History

12. The Evolution of Humans: Characteristics & Evolutionary History

Have a look at the evolutionary history of humans and what makes them different from primates. The topics covered are the characteristics and evolution of primates and the characteristics and evolution of humans.

What Are Viruses? - Definition, Structure & Function

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

A virus is defined as a microscopic and extremely infectious agent that invades and spreads, once inside a host. This lesson will dive into virology (the study of viruses), the history and structure of viruses, and how these infections exist in daily life.

Classification of Viruses: Viral Genome and Replication Scheme

14. Classification of Viruses: Viral Genome and Replication Scheme

Viruses are classified according to their physical and chemical characteristics. Learn about factors involved in classification, including double- and single-stranded viruses, positive and negative sense, the Baltimore classification system, and reverse transcriptase.

Growth, Reproduction & Dynamic Homeostasis in Organisms

15. 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.

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
More Exams
There are even more practice exams available in Praxis Biology: Classification of Organisms.

Earning College Credit

Did you know… We have over 220 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Support