In a volatile trade, the Indian rupee today ended nearly flat - up by a mere one paise - at 55.64 against the Greenback on alternate bouts of demand and supply.  The rupee resumed higher at 55.39 a dollar at the Interbank Foreign Exchange (Forex) market from overnight close of 55.65 and immediately touched a high of 55.25 on dollar selling by exporters and initial firmness in local stocks.  However, later it turned its trend and fell back to a low of 55.91 on heavy dollar demand from importers, mainly oil refiners, as global oil was trading weak. But once again it recovered some ground to end at 55.64 a dollar. Gulf Today