The Parliament of the Democratic Socialist Republic of Sri Lanka is the supreme legislative body of Sri Lanka. It alone possesses legislative supremacy and thereby ultimate power over all other political bodies in the island. It is modeled after the British Parliament.

It consists of 225 members known as Members of Parliament (MPs). Members are elected by proportional representation for five-year terms, with universal suffrage. Parliament reserves the power to make all laws.

The President of Sri Lanka has the power to summon, suspend, prorogue, or terminate a legislative session and to dissolve the Parliament. President can dissolve Parliament only after the lapse of 4 1/2 years or if 2/3 majority of Members of Parliament requests him. The actions of the President to either suspend or dissolve the Parliament is subject to legal scrutinity of the Supreme Court of Sri Lanka. The Speaker or, in his absence, the Deputy Speaker and Chairman of Committees or the Deputy Chairman of Committees, presides over Parliament.

Source : Wikipedia