Ch 11: Development of Vertebrates

About This Chapter

Get a snapshot of vertebrates and how they have evolved through these video lessons designed to help you prepare for MCAT study. These learning materials provide clear and concise information about this narrow topic within the complex field of biological science.

Development of Vertebrates - Chapter Summary

Get an overview of how vertebrates evolved in this series of video lessons. Trace the key qualities and characteristics that led to the development of physical attributes, like jaws and limbs. Follow the history of vertebrates from earliest known creatures through the origin of homo sapiens. Lessons cover:

  • Evolution of animals
  • Homogeneity and diversity in vertebrates
  • Types, origins and characteristics of vertebrates
  • Primates and the origin of people
  • Human evolution

The lessons in this chapter provide you with a synopsis of the evolutionary changes exhibited in this sub-phylum of animals. Reviewing these learning materials will help you to assess your own knowledge of the subject and more effectively plan your study activities.

MCAT Test Objectives

The MCAT is a multiple-choice exam that measures medical school applicants' readiness to meet the demands of a medical school education through cognitive skills and knowledge in the physical and biological sciences. There are 52 questions in the biological sciences section, which include topics on vertebrates. The test allows 70 minutes for this section and tests examinees' problem-solving skills and understanding of biological sciences and organic chemistry.

The biological sciences section includes 39 questions based on seven passages with four to seven questions per passage. There are also 13 stand-alone questions in this section. You can use the material in the this chapter's lessons as a helpful self-study option for this section of the exam.

8 Lessons in Chapter 11: Development of Vertebrates
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The Evolution of Animals: Importance & Evolutionary History

1. 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.

Vertebrates: Origin, Characteristics & Diversity

2. Vertebrates: Origin, Characteristics & Diversity

Vertebrates are diverse and widespread across Earth, but this was not always the case. In this lesson you'll learn about the origins and evolution of these animals, as well as explore their vast diversity.

Jawless Craniates: Class Myxini & Class Petromyzontida

3. Jawless Craniates: Class Myxini & Class Petromyzontida

The word 'fish' brings specific images to mind. But before these fish existed, there were the jawless craniates. In this lesson you will identify two classes that fall into this category: the hagfishes and the lampreys.

Fishes and Sharks: Origins of Jaws in Vertebrates

4. Fishes and Sharks: Origins of Jaws in Vertebrates

While it may appear to be a minor feature, the hinged jaw led to major changes in the evolution of animals. In this lesson, you'll discover some of the earliest jawed animals, the sharks and fishes of the world.

Tetrapods: Development of Limbs in Vertebrates

5. Tetrapods: Development of Limbs in Vertebrates

Having four limbs allowed for an incredible amount of diversification in the animal kingdom. But where did those limbs come from, and what types of diversifications arose from animals moving onto land?

Amniotes: Definition and Evolutionary Characteristics

6. Amniotes: Definition and Evolutionary Characteristics

One of the more 'recent' evolutionary developments in vertebrates is a terrestrial egg. This adaptation allowed for even greater diversity in this branch of the Animal Kingdom, giving rise to organisms that could now live their entire lives on land.

Primates and Human Origin

7. Primates and Human Origin

You probably know that you are a primate, just like gorillas and monkeys. But you may be surprised to find out how long primates have been around and how many of them are still living on Earth, which are covered in this lesson.

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.

Chapter Practice Exam
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Practice Final Exam
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