Since "vestigial" means an organ that is atrophied or functionless from the process of evolution, out of the list of four structures that are given, the human appendix is that vestigial organ. All of the other organs, especially the "multiple cow stomachs" and the horns of a deer do play an important role to that animal's life.
vestigal structure because they are used for the same thing just look different.Answervestigal structure because they are used for the same thing just look different.
By definition, no. Spiders are classified along a certain evolutionary path that has 8 legs, no more, no less.Having said that, there may be spiders that have vestigal legs lost, almost lost, or converted to non-walking use through evolution.For that matter, there may be spiders whose mouth parts or other body parts are partly evolved into locomotion helpers.Contact your local arachnologist for details.These realities show how interesting evolution actually is.
The first horse was no bigger than a 30cm ruler it had paws instead of hooves and had a tail like a fox it then after millions of years evolved into the tarpan which was the first horse that looks the same as we have 2day!Hope this has helped you!
vestigal
That would be: the Appendix. Its full name is: Vermiform Appendix/ It is a vestigal structure which has lost its original function.
In humans the appendix is a vestigal organ and has no function that we are currently aware of.
vestigial structure-such as the human appendix, doesn't seem to have a function and may once have functioned in the body of an ancestor..:)
Whales and some other cetaceans have unusable leg bones as a vestigal structure.
vestigal organ
yes, they have 2 pairs, one is a vestigal structure, the other is used for sensory functions :)
Vestigial structures are anatomical structures of organisms in a species which are considered to have lost much or all of their original function through evolution.
Vestigial structures are anatomical structures of organisms in a species which are considered to have lost much or all of their original function through evolution.
Vestigial StructureA vestigial structure is a structure that appears to no longer have a use in the body.
Vestigal organ
Vestigial structures. Over time, the reptiles snakes descended from gradually began to use their legs less and less and so the limbs disappeared. The hip and leg bones present are essentially useless to the snake and are "left over" from their evolution. That is what a vestigial structure is (e.g. appendix in humans is also vestigal; we don't use it).