19.4: Introduction to Fertilization - Biology

Discuss internal and external methods of fertilization

Sexual reproduction starts with the combination of a sperm and an egg in a process called fertilization. Some species release the egg and sperm into the environment, some species retain the egg and receive the sperm into the female body and then expel the developing embryo covered with shell, while still other species retain the developing offspring through the gestation period.

What You’ll Learn to Do

  • Define the term fertilization
  • Discuss external methods of fertilization
  • Discuss internal methods of fertilization
  • Describe the anatomical adaptations that occurred in animals to facilitate reproduction

Learning Activities

The learning activities for this section include the following:

  • Fertilization
  • External and Internal Fertilization
  • The Evolution of Reproduction
  • Self Check: Fertilization

Watch the video: The process of fertilization and the formation of (December 2021).