What is "zonate"

Zonate \Zon"ate\, a. (Bot.) Divided by parallel planes; as, zonate tetraspores, found in certain red alg[ae].

a. 1 (context biology English) Having or appearing to have multiple zones, such as of color or texture. 2 (context biology English) Having different colors, textures, or other patterns form a pattern of rings, bands, or stripes.