Field of Wireless Sensor Network (WSN) is among one of the most emerging and fast growing fields in today's scientific world. WSN is collaborated from a large number of low cost and minute homogenous sensor nodes connected by a wireless network. These sensor nodes are spread out in sensor field located far from the users. Increasing lifetime of WSN is one among the most critical issues. Sensor nodes are constrained in values of energy, memory and processing capacity. So to overcome such problems, a number of protocols have been proposed for the purpose of data routing in sensor network.