What Is External Fertilization And Internal Fertilization

This can occur either inside internal fertilization or outside external fertilization the body of the female. Features of external fertilization.

Topic 11 4 Sexual Reproduction Amazing World Of Science With Mr

Fertilization is the most important event that takes place in sexual reproduction.

What is external fertilization and internal fertilization. The main difference between internal and external fertilization is that internal fertilization occurs inside the female organism whereas external fertilization occurs outside the female organism. Internal fertilization is the process of fusion of sperm with an egg inside the female body whereas external fertilization is the process of fusion of sperm with the egg outside the body. Sexual reproduction starts with the combination of a sperm and an egg in a process called fertilization.

The sperms would die on land. The key difference between external and internal fertilization is that the union of male and female gametes in external fertilization occurs outside the female body while the union of male and female gametes in internal fertilization occurs inside the female body. In contrast external fertilization is the syngamy outside the female body that is in the outer environment especially in water bodies.

Both occurs in plants and animals. Most external fertilization happens during the process of spawning where one or several females release their eggs and the male s release sperm in the same area at the. Internal fertilization is followed by mammals birds while external fertilization is supported by mostly aquatic animals and few amphibians.

Mobile male games and immobile female gametes are produced in both internal and external fertilization. Both processes involve fusing male gametes with female gametes. The final product of both internal and external fertilization is the zygote.

A water body is required to initiate external fertilization. Unlike internal fertilization a large number of gametes need to be produced by the male and female to ensure reproductive success. After the sperm reaches the egg fertilization takes place.

Internal fertilization protects the fertilized egg or embryo from predation and harsh environments which results in higher survival rates than can occur with external fertilization. Humans provide an example of the former whereas seahorse reproduction is an example of the latter. External fertilization usually occurs in aquatic environments where both eggs and sperm are released into the water.

Internal fertilization is the process when the syngamy union of male and female gamete occurs inside the female body after insemination using copulation. External fertilization occurs outside the body of the female usually in water or any other external environment while internal fertilization takes place within the body of the female using the copulative organ of the male. Oviparity viviparity and ovoviparity are the three methods of internal fertilization.

The success rate of fertilization is very low. Similarities between internal and external fertilization. Ovoviparity is characterized by an organism retaining a fertilized egg inside the body where development occurs and nourishment is received from the yolk.

In internal fertilization a smaller number of gametes are released whereas in external fertilization numerous gametes are released into the environment. Broadly fertilization can be divide into two types internal fertilization and the external fertilization. In other words it is the vital process that creates an offspring from two parents.

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