Ganesha is represented as having a human body with the head of an elephant. The principle qualities of the elephant are wisdom and eortlessness. The enormous head of the elephant signies wisdom and knowledge. One of Ganesha's 108 names is Lord of Obstacles. Elephants don't walk around obstacles, neither do they stop at them. They just remove them and keep walking straight on – signifying effortlessness. When one prays to Lord Ganesha, one is asking to connect to the Universal Soul to remove obstacles. Ganesha is given dominion over the Ganas, which is a general term denoting all classes of beings, ranging from insects, animals and humans to the subtle and celestial beings, everything from natural forces like storms and earthquakes to the elemental qualities like re and water. Therefore, instead of propitiating each Gana in order to receive their blessings, one bows to their Lord, Sri Ganesha. By receiving His grace, one receives the grace of all.