Answer to what type of arthropod appendage is comprised of a single series of segments attached end-to-end, rather than branching into two?

 The uniramous type of the appendages of arthropods are comprised of a single series f segments attached end-to-end, rather than branching into two. The other type of arthropod appendages are biramous. The biramous limb branches into two, and each branch consists of a series of segments attached end-to-end.