Explanation:

- The Minister of Parliamentary Affairs helps coordinate between the government and Parliament but does not summon meetings.

- The Prime Minister leads the government and advises the President but does not have the authority to summon Parliament.

- The President of India is responsible for summoning and proroguing sessions of Parliament, typically based on the advice of the Prime Minister and Cabinet.

- The Speaker and Vice President have key roles within the two houses of Parliament but do not summon meetings.