A big chocolate cake was cut at Rashtrapati Bhawan on Monday to mark President Pratibha Patil's 77th birthday.

Vice President Hamid Ansari, Prime Minister Manmohan Singh, Congress President Sonia Gandhi and Railways Minister Dinesh Triwedi called on the President Mrs. Patil to greet her on the occasion.

The President was also presented with a bouquet of red roses on behalf of the Rasthrapati Bhawan staff.