About This Chapter
Classification of Living Organisms - Chapter Summary
In this chapter you will learn about the classification systems that biologists use to make sense out of the vast array of living things surrounding us. The lessons will teach you about Carolus Linnaeus, the system of nomenclature and taxonomy that he developed, and will show you how it all fits together. You will explore the tree of life, see how species are related to each other through evolutionary pathways, and learn how phylogenetic trees and cladograms are used. Upon successful completion of the chapter, you should be able to:
- Understand how living things are classified and named
- Describe Carolus Linnaeus's achievements in taxonomy and biology
- Identify the domains of the Tree of Life
- Explain how scientists use cladograms and phylogenetic trees
- Define and create diagrams of evolutionary relationships
The short duration of these lessons allows you to fit them easily into your busy schedule, while the readily-accessible online platform allows you to study at your convenience and at your own pace. Each lesson is accompanied by a short quiz that enables you to reinforce and check what you've learned, while the chapter test gives you a way to gauge your overall mastery of the material.
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.
2. Carolus Linnaeus: Classification, Taxonomy & Contributions to Biology
There are millions of species on Earth. How can we name and organize all of them without getting confused? We use a system developed in the 1700s by Carolus Linnaeus. Learn more about him and his contributions in this lesson.
3. Tree of Life Domains: Bacteria, Archaea & Eukarya
In this lesson we will consider how all the organisms on Earth are related to one another and the favored hypothesis for how all these organisms fit into three broad categories called domains.
4. 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.
5. Evolutionary Relationships: Definition & Diagram
Just like you can build a family tree to show the relationships of your ancestors and their descendants, scientists can build trees to show the evolutionary relationships of species. In this lesson, learn how to interpret these evolutionary trees.
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Other chapters within the GCSE Biology: Practice & Study Guide course
- The Process of Scientific Thinking
- Steps of the Scientific Method
- Analyzing & Evaluating Scientific Data
- Mathematics in Science
- Scientific Vocabulary & Measurement
- Cell Structure & Differentiation
- Understanding Cell Division
- Understanding Cell Transportation
- Basic Components of Living Things
- Structure & Function of the Digestive System
- The Human Circulatory System
- Non-Communicable Diseases Overview
- Communicable Disease Overview
- Disease Defense, Prevention & Treatment
- Plant Tissues & Organs
- Plant Disease & Defenses
- Homeostasis & the Human Body
- Human Nervous System Overview
- Hormones in the Endocrine & Urinary Systems
- Hormones & Reproduction
- Plant Hormones
- Sexual & Asexual Reproduction
- DNA Structure & Genomes
- Genetic Inheritance
- Genetics Disorders
- Genetic Variation & Evolution
- Genetic Engineering & Cloning
- Theories of Biology
- Evidence Supporting Evolution
- Ecology & Biodiversity
- Trophic Levels & Biomass Energy
- Nutrient Cycles in an Ecosystem
- Human Impacts on Biodiversity & Ecosystems
- Food Production & Sustainability
- GCSE Biology Flashcards