Render specific meridians/parallels of a sphere I would like to render specific meridians or parallels of an UV Sphere to obtain this kind of plain images. 

I have been trying with the Wireframe Modifier but I can't find an easy way to render just the ones I want.

Any clues to do it in an easy way? 

Thanks for you help in advance
Start with an UVSphere.



Select the edge loops you want (Equator, Parallels, Meridians)

Press P to separate the selected edges.



Select the newly created object and press AltC to Convert the object to Curves:



Give the curve some bevel or extrusion: