Although bats and birds are both vertebrates, they evolved flight separately. Bats move the air with thin skin rather than feathers. And the bones in bat wings reach the wingtip, while birds have short wing bones and long flight feathers..sorry if i havent answered your questions properly im only 12..:) but hopefully you would have learned something
They're not, bats have 4 bones and skin in between whilst birds have hollow bones and feathers.
The wing is a classic example of convergent evolution in action. Although their last common ancestor did not have wings, birds and bats do.
Yes. In both bats and birds the forelimbs have evolved into wings fore use in powered flight.
They all have the same bones, albeit evolved to suit different needs.
This is 'convergent evolution', where completely different, unrelated organisms develop a similar feature.
An analogous structure is a structure that has a similar function but different components. For example, the wings of a butterfly verses those of a bird. In both cases, the function is flight, but the wings are build differently.
In biology, homologous structures are defined as structures which serve the same purposes because they evolved from the same source (divergent evolution), the opposite of analogous structures, which serve the same purpose but evolved through convergent evolution. Birds' wings and bats' wings are both homologous and analogous. As wings, the two are analogous, but as forelimbs, the two are homologous.
divergent, as both are fish but seals appear like a mammal and a penguin a bird.
An Observation
Homologous structures indicate a common ancestor
yes and also an example of evolution
observation not inference
Similar structures that have evolved independently are called homologous structures. An example would be the wings of a bird and the wings of an insect.
Well, convergent evolution is the acquiring of similar characteristics and unrelated lineages (such as a bird and butterfly both having wings), and is related to niche because a similar niche allows a similar adaptation to form to accomplish that niche.For example,The Australian honey possumacquired a long tongue for taking nectar from flowers, a structure similar to that ofbutterflies, some moths, and hummingbirds, and used to accomplish the very same task.
A bird has got its wings thanks to the evolution, life started in the sees and pools and found his way to the land, it's likely that the organisms who lived on land in someway splitted in another group for flying animals. in the years after that wings have developed furtherlike they're now in most of the birds :)