The parliamentary system of government in India operates on the basis of several key features. These features ensure the smooth functioning of the government and the efficient execution of policies and decisions. The following are the main features of the parliamentary system in India:

1. Bicameral Legislature:
- India has a bicameral legislature consisting of two houses - the Lok Sabha (House of the People) and the Rajya Sabha (Council of States).
- The Lok Sabha is directly elected by the people, while the Rajya Sabha is composed of representatives elected by the members of the State Legislative Assemblies.
- Both houses play significant roles in the legislative process, with the Lok Sabha having more powers in matters related to finance and legislation.

2. Executive Head:
- The President of India is the ceremonial head of the country and is elected by an Electoral College consisting of members of both houses of Parliament and the State Legislative Assemblies.
- The President appoints the Prime Minister, who is the actual head of the government.
- The Prime Minister is the leader of the majority party in the Lok Sabha and exercises executive powers.

3. Council of Ministers:
- The Prime Minister forms the Council of Ministers, also known as the Cabinet, which consists of senior ministers responsible for various government departments.
- The Council of Ministers assists the Prime Minister in decision-making, policy formulation, and implementation.

4. Collective Responsibility:
- The principle of collective responsibility is a crucial aspect of the parliamentary system in India.
- It means that all ministers are collectively responsible for the decisions taken by the government.
- If a minister disagrees with a government decision, they are expected to either resign or support the decision publicly.

5. Question Hour and Debates:
- The parliamentary system in India emphasizes a system of checks and balances through Question Hour and debates.
- Members of Parliament have the right to ask questions to ministers, who are obligated to provide answers.
- Debates allow MPs to discuss and deliberate on various issues, ensuring transparency and accountability.

6. Vote of Confidence and No-Confidence Motion:
- The government's stability is tested through a vote of confidence, where the government seeks approval from the Parliament.
- A no-confidence motion can also be brought against the government by the opposition, requiring the government to prove its majority.
- These mechanisms ensure that the government remains accountable to the Parliament.

7. Independent Judiciary:
- India has an independent judiciary that acts as a guardian of the constitution and ensures the rule of law.
- The judiciary has the power of judicial review and can declare any law or government action unconstitutional if it violates the fundamental rights of citizens.

In conclusion, the parliamentary system in India operates on the basis of a bicameral legislature, executive head, collective responsibility, question hour and debates, vote of confidence, and an independent judiciary. These features promote accountability, transparency, and effective governance in the country.