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Ch 22: OAE - Biology: Animal Reproduction & Development

About This Chapter

Watch these helpful video lessons to review the reproduction and development of animals before you sit for the OAE Biology exam. Make sure to try out our self-assessment quizzes to get a feel for the types of questions that are on the OAE Biology exam.

OAE - Biology: Animal Reproduction & Development- Chapter Summary

Let us help you nail down everything you need to know about animal development and reproduction for the OAE Biology exam. Study these engaging video lessons, complete with fun animations and easy-to-follow narrations, and you'll have no problem with animal development and reproduction questions on test day. After reacquainting yourself with material in this chapter, you'll be prepared to:

  • Discuss how the male and female reproductive systems produce sperm and eggs
  • Track the initial stages of early embryonic development, from the morula and blastula
  • Explain how the embryo is implanted and the function and structure of the placenta
  • Outline the functions of amniotic fluid, the amnion, and the yolk sac
  • Label a diagram of the three germ layers of a gastrula
  • Define Spemann's organizer and explain how it controls the fate of cells
  • Describe how differentiation is controlled by signaling molecules
  • Address how fate mapping tracks cell development

Our self-assessment quizzes are loaded with questions like the ones on the OAE Biology exam. After studying these videos, which are accessible on any device, test yourself. If you're not satisfied with you performance, you can re-watch the videos as many times as you need to.

Animal Reproduction & Development - Chapter Objectives

For instructors seeking licensure in the state of Ohio to teach life sciences in grades 7-12, the OAE Biology exam is a prerequisite. To pass, one must score a 220.

The exam includes five domains, each encompassing a different subject in biology. The biological unity and diversity section, which accounts for 20% of the questions on the test, includes questions about the reproduction and development of animals. The exam is comprised of 150 multiple-choice questions. You will have three hours to complete the test.

12 Lessons in Chapter 22: OAE - Biology: Animal Reproduction & Development
Test your knowledge with a 30-question chapter practice test
Overview of Animal Reproduction and Development

1. Overview of Animal Reproduction and Development

Sexual reproduction in animals involves many different steps, beginning with gametogenesis and ending with the formation of three primary germ layers. Discover how those initial steps happen, and explore different definitions of the parts of animal reproduction and development.

Spermatogenesis: How the Reproductive System Produces Sperm

2. Spermatogenesis: How the Reproductive System Produces Sperm

Spermatogenesis is a process that takes place in the seminiferous tubules where sperm, or gametes, are formed. Discover other processes and concepts about the production of sperm in the reproductive system.

Oogenesis: How the Female Reproductive System Produces Eggs

3. Oogenesis: How the Female Reproductive System Produces Eggs

Oogenesis is a process that takes place in the ovaries where female gametes or ova are formed. Learn more about oogenesis and other processes in the female reproductive system's production of eggs, such as meiosis, ovulation, and fertilization.

Early Embryonic Development: The Morula and Blastula

4. Early Embryonic Development: The Morula and Blastula

Following fertilization, the early stages of mammalian development--including cleavage, morula formation and blastula formation--are unique to mammalian embryos. Learn about key processes in each stage of development and how they differ from those in non-mammalian development.

Embryo Implantation and Placenta Formation

5. Embryo Implantation and Placenta Formation

All mammals begin as fertilized embryos. Learn what happens to a mammalian embryo when it is fertilized, understand how implantation occurs, and explore how the placenta forms.

The Placenta and the Fetus: Structure and Function

6. The Placenta and the Fetus: Structure and Function

Babies must eat but also discharge wastes into the mother's blood, for which the placenta can be considered the interface. Explore the structure and function of the placenta and how it facilitates the transfer of nutrients and waste products between mother and baby.

Amniotic Fluid, The Amnion, and the Yolk Sac

7. Amniotic Fluid, The Amnion, and the Yolk Sac

Living organisms need a support system as they grow from an embryo into a newborn. Learn how amniotic fluid, the amnion, yolk sac, chorion, and allantois function in placental mammals and egg-laying vertebrates to nourish and protect the unborn as they develop.

Gastrulation and the 3 Germ Layers (Ectoderm, Endoderm & Mesoderm)

8. Gastrulation and the 3 Germ Layers (Ectoderm, Endoderm & Mesoderm)

Gastrulation is a process that creates three different germ layers in an early embryo called ectoderm, endoderm, and mesoderm. Learn what this process is and discover how it occurs in the gastrulation of frogs and mammals.

Spemann's Organizer: Controller of Cell Fate

9. Spemann's Organizer: Controller of Cell Fate

Spemann's organizer is a small group of cells in the human body that controls cell fate and determines how an embryo develops. Learn about embryo experiments conducted by Wilhelm Roux, Hans Driesch, and Hans Spemann and the three major body axes.

Concentration Gradients, Signaling Molecules & Inhibitors in Development

10. Concentration Gradients, Signaling Molecules & Inhibitors in Development

A developing embryo has a complex regulatory system. Learn about Spemann's organizer, which is the source of a number of different proteins, learn about other parts of the embryo development process, including concentration gradients, and explore the complexity of the differentiation process.

How Signaling Molecules Control Differentiation

11. How Signaling Molecules Control Differentiation

During the early stages of the maturity of an embryo, each cell undergoes a process called differentiation, which determines the function and specific type of the cell. Learn about the process of differentiation, the different types and functions of signaling molecules, and how these signaling molecules control the differentiation of cells.

How Fate Mapping Is Used to Track Cell Development

12. How Fate Mapping Is Used to Track Cell Development

Fate mapping is the process of tracking cells using dyes to monitor how they grow and develop as an organism matures. Learn about fate mapping processes developed by an embryologist in 1929 for mammals and non-mammal, and discover how advances in science and technology and even dyes have improved fate mapping.

Chapter Practice Exam
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Practice Final Exam
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