Discuss the various roles or functions …

Following are the  functions of the Parliament:

• The members of the Lok Sabha select the executive wing of the Government. The Executive implements the laws which are made by the Parliament.
• The leader of the ruling party which gets the majority in the Lok Sabha elections is chosen as the Prime Minister of the country. He selects the Council of Ministers and the cabinet ministers who look after various departments such as defence, health and education.
• The Rajya Sabha is the Upper House of the Parliament. It represents various states of India in the Parliament as its members are elected by the elected members of the Legislative Assemblies of the states.
• The Parliament can control and review the work of the Government. The session of the Parliament begins with a ‘Question Hour’, where the members of the Parliament question various policies of the Government. They thus control the executive by asking questions on the implementation of various policies.
• The opposition parties play an important role by questioning various policies of the Government. It draws the attention of the people towards the flaws in government policies.