15) Homologous Structure
A homologous structure is an example of a bone that appears in different animals, demonstrating descent from a common ancestor. In the picture is a human arm next to a dog's leg, showing the similarities between the two.
1) Animal that has a Segmented Body
A segmented body is the division in the animal's body plan, into separate functional units. Arthropods, such as the Armadillidiidae pictured here , are examples of a segmented body
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