Bottle gourd plant has evolved a special senso-motor organ in the form of tendril. The tendril provides sensory detection of foreign material and mobility to the plant. There are motor cells clustered at strategic locations on the tendril which are at the heart of rapid contact coiling of the tendril. In tendril the motor cell has additional sensory mechanism. Thus these motor cells may be called as SENSO-MOTOR CELLS. The role of electrostatic charge in the functioning of these SENSO-MOTOR cells and other factors involved in rapid contact coiling are discussed.