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Ch 21: Phylogeny and the Classification of Organisms: Help and Review

About This Chapter

The Phylogeny and the Classification of Organisms chapter of this College Biology Help and Review course is the simplest way to master phylogeny and classification. This chapter uses simple and fun videos that are about five minutes long, plus lesson quizzes and a chapter exam to ensure students learn the essentials of phylogeny and classification.

Who's it for?

Anyone who needs help learning or mastering college biology material will benefit from taking this course. There is no faster or easier way to learn college biology. Among those who would benefit are:

  • Students who have fallen behind in understanding phylogenic trees or organisms' evolutionary history
  • Students who struggle with learning disabilities or learning differences, including autism and ADHD
  • Students who prefer multiple ways of learning science (visual or auditory)
  • Students who have missed class time and need to catch up
  • Students who need an efficient way to learn about phylogeny and the classification of organisms
  • Students who struggle to understand their teachers
  • Students who attend schools without extra science learning resources

How it works:

  • Find videos in our course that cover what you need to learn or review.
  • Press play and watch the video lesson.
  • Refer to the video transcripts to reinforce your learning.
  • Test your understanding of each lesson with short quizzes.
  • Verify you're ready by completing the Phylogeny and the Classification of Organisms chapter exam.

Why it works:

  • Study Efficiently: Skip what you know, review what you don't.
  • Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
  • Be Ready on Test Day: Use the Phylogeny and the Classification of Organisms chapter exam to be prepared.
  • Get Extra Support: Ask our subject-matter experts any phylogeny or classification question. They're here to help!
  • Study With Flexibility: Watch videos on any web-ready device.

Students will review:

In this chapter, you'll learn the answers to questions including:

  • How is taxonomy used to organize and name living things?
  • Why do scientists use cladograms and phylogenetic trees?
  • How did prokaryotes, the first living things, evolve?
  • Why are protists important in evolutionary history?
  • What are some of the differences between fungi and plants?
  • How have invertebrate and vertebrate animals evolved?
  • How have human beings changed over time?

9 Lessons in Chapter 21: Phylogeny and the Classification of Organisms: Help and Review
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.

Cladograms and Phylogenetic Trees: Evolution Classifications

2. 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

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.

Bilateral Symmetry: Definition, Examples & Advantages

8. Bilateral Symmetry: Definition, Examples & Advantages

We will learn all about bilateral symmetry and look at some examples. The advantages of bilateral symmetry will also be discussed. Then, you can take the quiz to check your knowledge.

Dinoflagellates: Characteristics, Examples & Classification

9. Dinoflagellates: Characteristics, Examples & Classification

Did you know that there are tiny living organisms floating at the surface of most freshwater and saltwater bodies? Many of these organisms are dinoflagellates. In this lesson, we will investigate dinoflagellates to gain a better understanding of them.

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