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Birds primarily exhibit external development. After fertilization, the embryos develop within eggs laid by the female, which provide protection and nutrients. This external development allows for the young to grow in a controlled environment until they are ready to hatch. Once hatched, the chicks are often dependent on their parents for care and feeding.
What else can I help you with?
What animal group has internal fertilisation but external development?
Reptiles and birds are among the major groups of vertebrates that have internal fertilization and external development. Also included are monotremes and marsupials.
Is birds fertilization internal or external?
All birds fertilize their eggs internally. A male bird has to mate with a female in order for a fertilized egg to be produced.
Is aves internal or external fertilization?
Aves, or birds, typically exhibit internal fertilization. In this process, the male bird transfers sperm to the female bird's reproductive tract before the eggs are laid. This adaptation allows for the fertilization of eggs to occur inside the female's body, which can enhance the likelihood of successful development of the embryos. After fertilization, the female lays eggs that develop outside her body.
What animals have internal development?
Animals that have internal development include mammals, birds, reptiles, and some fish. These animals give birth to fully formed young ones after the internal development process, where the embryo develops inside the mother's body. This allows the young ones to be born in a more advanced state compared to animals with external development.
What is the development of birds internal or external?
Birds develop internally, within the egg, where they undergo rapid physical changes before hatching. The egg provides protection and nutrients for the developing embryo, allowing it to grow and develop until it is ready to hatch. Once hatched, the bird continues to grow and mature externally in its environment.
Do a bird has a andoskeleton?
I think the word you are looking for is endoskeleton, which is internal and birds do have. As do people. Insects and arachnids for instance have exoskeletons, which are external.
Is Chicken internal or external fertilization?
All birds, chickens included, are fertilised internally. Both the male and female birds have a cloaca. And it is through their cloaca that sperm is passed. An example of external fertilisation is the frog, the male emitting sperm onto the spawn that the female is releasing.
Which chordate groups can regulate their body temperature?
Among chordate groups, birds and mammals are the primary groups that can regulate their body temperature through endothermy, maintaining a constant internal temperature regardless of external conditions. Some reptiles and amphibians exhibit behavioral thermoregulation, adjusting their body temperature by changing their environment, but they are not true regulators like birds and mammals. Fish and most other chordates are ectothermic, relying on external heat sources to regulate their body temperature.
Do kiwi birds have exoskeletons?
No. Kiwi are birds, and all birds have an internal skeleton. They are vertebrates, just as mammals are.
Are horses eggs internal or external?
internal. horses give birth to live young - they're mammals.
What is when the yolk is where the embryo develops?
When the yolk is where the embryo develops, it is called telolecithal development. In this type of development, the yolk is concentrated at one pole of the egg, providing nutrients for the developing embryo. Examples of organisms that exhibit telolecithal development include birds and reptiles.
is a bird an animal reproduction or external fertilization?
Both internal and otherwise.Reproduction in birds is quite complicated . Birds reproduce sexually and have separate sexes and internal fertilization, so males and females must mate for fertilization . Mating is generally preceded by courtship. In most species, parents also take care of their eggs and hatchlings.
