Earlier the Governor offered floral tribute to the portrait of the leader.
November 19-25 is being observed as 'Qaumi Ekta Saptah' week by the Government.
Mantralaya staff and employees were also administered the pledge by Chief Minister Prithviraj Chavan to work with dedication to preserve and strengthen freedom and integrity of the nation.
Homage was also paid to Gandhi at the Congress office in Tilak Bhavan in Central Mumbai.