About This Chapter
Overview of Biological Evolution on Earth - Chapter Summary
Biological evolution on Earth is emphasized in this informative chapter. You'll review the origins of life on Earth and the endosymbiosis theory, among other related subjects. After finishing this chapter, you should be ready to complete the following:
- Provide a timeline of the history of life on Earth
- Discuss how early Earth conditions were affected by the evolution of life
- Define evolutionary change and the forms it takes
- Explain the evidence used for evolution
- Describe the fossil evidence for speciation, mass extinction and biological diversity
- Define a cladogram with examples
- Give an overview of polyphyletic groups
- Outline taxonomy and the naming and classification of living things
We've put together this thought-provoking chapter to make it easy to understand these topics and take the stress out of studying. You're encouraged to move at your own pace through these lessons and take the associated quizzes to ensure your comprehension. If at any moment you have any questions, submit them through the Dashboard to an instructor.
1. The Origin of Life on Earth: Theories and Explanations
Ever wonder how living things came from non-living things? We will explore what conditions on early Earth may have created life from non-living items.
2. The Endosymbiosis Theory: Evolution of Cells
Ever wonder why some cells are very simple and others are complex with countless organelles to remember? We will look at how simple cells evolved to become more complex cells - as well as evidence to support this.
3. The History of Life on Earth: Timeline and Characteristics of Major Eras
The Earth is over 4 billion years old. Ever wonder what happened during certain time periods in that large amount of time? We will look at the major eons and eras of Earth's history along with important characteristics of each.
4. How the Evolution of Life Affected Early Earth Conditions
In this lesson, we'll give particular attention to how early life changed Earth's atmosphere. We'll also talk a little about chemical evolution and the prebiotic soup.
5. Evolutionary Change: Definition and Forms
You've probably heard of Charles Darwin and evolution. We know that evolution is change over time, but here we will look at how these changes may have occurred during Earth's history.
6. Evidence for Evolution: Paleontology, Biogeography, Embryology, Comparative Anatomy & Molecular Biology
There is much support for the theory of evolution. This evidence comes from a variety of scientific fields and provides information that helps us trace changes in species over time. In this lesson, we'll look at this evidence and explore how it supports the theory of evolution.
7. Fossil Evidence for Biological Diversity, Speciation, & Mass Extinction
One of the best sources of evidence we have for evolution is the fossil record. Fossils provide a wealth of information on how species change over time and for exciting events like mass extinctions and new species formation.
8. Cladogram: Definition & Examples
There are many different types of graphs in science. Oftentimes, when we see the suffix 'gram' it is referring to a chart or graph. A cladogram is just that. It is a chart that we use to better understand ourselves and our ancestors as you will see here.
9. Polyphyletic Group: Definition & Overview
In this lesson, we'll explore the polyphyletic category of systematics, including some common biological examples. We'll start with a brief review of systematics, and then learn how scientists use the 'tree of life' to understand the evolutionary relationships among organisms.
10. 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.
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Other chapters within the CSET Science Subtest II Life Sciences (217): Practice & Study Guide course
- Principles of Cell Structure & Function
- The Organization & Function of Multicellular Organisms
- The Cell Cycle, Mitosis & Meoisis
- Matter & Energy Flow in Organisms
- Interdependent Relationships in Ecosystems
- Cycles of Matter & Energy Transfer in Ecosystems
- Biodiversity & Sustainability
- DNA & Gene Expression
- Genetics & Inheritance
- Genetic Variation & Engineering
- The Role of Natural Selection in Biological Evolution
- Adaptation in Biological Evolution
- CSET Science Subtest 2 Life Sciences Flashcards