What are internal and external fertilization?

What are internal and external fertilization?

Complete answer: Internal fertilization is the process when the syngamy (union of male and female gamete) occurs inside the female body after insemination using copulation. In contrast, External fertilization is the syngamy outside the female body, that is in the outer environment especially in water bodies.

What are 3 examples of external fertilization?

Fish. Salmon, cod, trout, and char are all examples of the fish that externally fertilize. The female and male both release their gametes into the water, where they diffuse together and fertilize.

What is external fertilization?

External fertilization is characterized by the release of both sperm and eggs into an external environment; sperm will fertilize the egg outside of the organism, as seen in spawning.

What is external fertilization give examples?

external fertilization is a case in which fusion of male and female gametes takes place in outside environment/ medium and not in the body of the female . for example, in case of frogs , fertilization takes place in water medium . the female releases eggs in the water at the same time sperms are released too.

What are the similarities of internal and external fertilization?

The similarity between internal fertilization and external fertilization is that the sperm fuses with the egg cell to form a zygote. The dissimilarity is that in internal fertilization, the fusion occurs inside the body of the organism while in external fertilization, the fusion occurs outside the body of the organism.

What is internal fertilization example?

Internal fertilization is the union of an egg and sperm cell during sexual reproduction inside the female body. Salamanders, spiders, some insects and some molluscs undertake internal fertilization by transferring a spermatophore, a bundle of sperm, from the male to the female.

Is external fertilization asexual?

In asexual reproduction, an individual can reproduce without involvement with another individual of that species. During sexual reproduction, the male gamete (sperm) may be placed inside the female’s body for internal fertilization, or the sperm and eggs may be released into the environment for external fertilization.

What is the major disadvantage of external fertilization?

Unlike internal fertilization, a large number of gametes need to be produced by the male and female to ensure reproductive success. A water body is required to initiate external fertilization. It is a reproductive disadvantage for most of the animals because most of the gametes die without being fertilized.

What is fertilization and its types?

Fertilization is the process by which the male and female gametes fuse to form the zygote. There are two types of fertilization- External fertilization- It is the fertilization where the eggs are fertilized outside the body of the organisms.

What is fertilization example?

Sexual reproduction starts with the combination of a sperm and an egg in a process called fertilization. Humans provide an example of the former whereas seahorse reproduction is an example of the latter. Fertilization, pictured in Figure 1a is the process in which gametes (an egg and sperm) fuse to form a zygote.

What is internal fertilization explain with example?

What are the advantages and disadvantages of internal and external fertilization?

Internal fertilization Increase chance gametes meet and greater change of successful fertilisation. More protection against outside environments and predators, and therefore a higher chance of surviving until birth. More selective of their mates. Less chance of desiccation of gametes.

What is the difference between external and internal fertilization?

External and internal fertilization are forms of reproduction that vary in method and embryo development. External fertilization is characterized by the release of both sperm and eggs into an external environment; sperm will fertilize the egg outside of the organism, as seen in spawning.

How to convert internal hard disk to external hard disk?

Here’s a simple method to convert any internal hard disk or ssd into a portable external hard disk. This method is completely tool-less and requires no experience. Best of all, it costs only below Rs.600 for the entire conversion. Instrumental produced by Chuki. Support Phone Stein (Bookmark The Links and purchase from that)!

Why do fish use external and internal fertilization?

The anemone fish utilizes a form of external fertilization. External fertilization in an aquatic environment protects the eggs from drying out. Broadcast spawning can result in a greater mixture of the genes within a group, leading to higher genetic diversity and a greater chance of species survival in a hostile environment.

How does an external hard drive connect to a computer?

External hard drives are not placed inside a laptop or a computer host—they connect to a computer via a USB or FireWire cable. However, take an external hard drive out of the hard drive case and you will discover the internal hard drive has the same internals structure with the hard drive used in the computer.