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Not all species that are aquatic use external fertalization. Dolphins se internal fertilization but it is very dificult because they would have to evolve adapted sexual organs and i dont think fishes have the right organs for internal fertalizations so they juust eject it into water. I'm not sure this is correct but i hope it helps. You might nneed to check it before you use it in any peices of writing.
What else can I help you with?
External fertilization in animals?
External fertilization occurs when the union of egg and sperm takes place outside the bodies of the individuals involved. It is common in aquatic animals such as fish and amphibians, where both gametes are released into the water for fertilization to occur. This type of fertilization is less reliable than internal fertilization as it is subject to environmental factors such as water currents and predation.
What are the similarities of internal external fertilization?
Internal fertilization takes place inside the body of the female. It is necessary for animals which live on land (terrestrial animals) and is retained by aquatic animals descended form terrestrial ancestors eg whales and dolphins. External fertilization takes place outside the body of the female. It usually takes place in water, usually the environment in which the animal lives eg fish and amphibians. This is because eggs and sperm would dry out and die if they are not kept wet. Internal fertilization is more certain than external fertilization so fewer eggs need to be produced. After internal fertilization eggs can be protected and fed while developing inside the mother's body. After external fertilization the eggs are potentially exposed to predators and so must either be produced in very large numbers or protected by the parents or both.
What relationship exists between an organisms habitat and its method of fertilization?
The organism's habitat can influence its method of fertilization based on the physical conditions required for successful reproduction. For example, in aquatic environments, external fertilization is common among species that release gametes into the water for fertilization to occur. On the other hand, in terrestrial environments, internal fertilization is more prevalent to ensure protection of gametes from drying out.
Are all eggs fertilized in external fertilization?
No, in external fertilization, not all eggs are fertilized. The eggs are released into the environment and must be externally fertilized by sperm for fertilization to occur. Many eggs may not encounter sperm and therefore will remain unfertilized.
Where does fertilization occur in a female sheep?
In the fallopian tube and uterus.
What adaptations in aquatic animals help ensure that external fertilization will occur?
produce more eggs
What type of fertilization and development occur in the zebrafish?
Zebrafish exhibit external fertilization, where the female releases eggs and the male fertilizes them outside of the body. The embryos develop externally, with the early stages of development taking place outside of the mother's body in the water.
External fertilization in animals?
External fertilization occurs when the union of egg and sperm takes place outside the bodies of the individuals involved. It is common in aquatic animals such as fish and amphibians, where both gametes are released into the water for fertilization to occur. This type of fertilization is less reliable than internal fertilization as it is subject to environmental factors such as water currents and predation.
What are some environments in which external fertilization can occur?
Water would be the number one choice.
What is the difference between external fertilization and internal fertilization?
External takes place outside the female, as with fish eggs on which the male fish places his sperm. Internal fertilization, in plants and animals, takes place within the organism's structures, where the gametes are joined. In humans, in vitro fertilization (i.e. test tube babies) is a form of external fertilization in that it bypasses the normal occurrence in the fallopian tubes, and then directly implants the fertilized egg(s) in the uterus.
What are the similarities of internal external fertilization?
Internal fertilization takes place inside the body of the female. It is necessary for animals which live on land (terrestrial animals) and is retained by aquatic animals descended form terrestrial ancestors eg whales and dolphins. External fertilization takes place outside the body of the female. It usually takes place in water, usually the environment in which the animal lives eg fish and amphibians. This is because eggs and sperm would dry out and die if they are not kept wet. Internal fertilization is more certain than external fertilization so fewer eggs need to be produced. After internal fertilization eggs can be protected and fed while developing inside the mother's body. After external fertilization the eggs are potentially exposed to predators and so must either be produced in very large numbers or protected by the parents or both.
How do most animals reproduce and what are the common methods they use?
Most animals reproduce sexually, where a male and female come together to produce offspring. Common methods include internal fertilization, where sperm fertilizes eggs inside the female's body, and external fertilization, where eggs and sperm are released into the environment to meet and fertilize outside the body.
Can it be possible for fertilization to happen outside the female human body?
Fertilization that happens outside the female body is called in-vitro fertilization. In this procedure, the ova is fertilized with the sperm in a laboratory.
When does fertilization in mitosis occur?
Fertilization in mitosis occurs when the sperm and egg cells fuse during sexual reproduction, typically in the reproductive organs of plants and animals. This fusion of gametes results in the formation of a zygote, which then undergoes mitotic cell division to develop into a new organism.
How do snails fertilize internal or external?
Snails can either fertilize internally or externally, depending on the species. Most terrestrial snails, such as garden snails, engage in internal fertilization, where the male transfers sperm to the female's reproductive tract during mating. In contrast, some aquatic snails may practice external fertilization, releasing eggs and sperm into the water simultaneously for fertilization to occur. This variation in fertilization methods is influenced by their respective environments and reproductive strategies.
What relationship exists between an organisms habitat and its method of fertilization?
The organism's habitat can influence its method of fertilization based on the physical conditions required for successful reproduction. For example, in aquatic environments, external fertilization is common among species that release gametes into the water for fertilization to occur. On the other hand, in terrestrial environments, internal fertilization is more prevalent to ensure protection of gametes from drying out.
Where and when does fertilization occur?
Fallopian Tubes
