Article 75(3) of the Indian Constitution makes the council of ministers collectively responsible to the house of people or the Lok Sabha
'Collective responsibility' means that the council of ministers is responsible for every action of the Government (Executive) as a single unit before the LokSabha as they act as a bridge between the Executive and the Legislature.
In case a no-confidence motion is passed against the PM, the entire Government has to resign.
Extra facts:
The First Lok Sabha was constituted on 13 April 1952
after India's first general election.
First Session of this Lok Sabha commenced on 13 May 1952
The 1st Lok Sabha lasted its full tenure of five years and was dissolved on 4 April 1957.
First Lok Sabha period - 13 April 1952- 4 April 1957