India is a democracy having quasi-federal structure of Government. Laws are made separately at different levels, by the Union Government/Federal Government for the whole country and by the State Governments for their respective states as well as by local municipal councils at district level. The Legislative procedure in India for the Union Government requires that proposed bills pass through the two legislative houses of the Indian parliament, i.e. the Lok Sabha and the Rajya Sabha. The legislative procedure for states with bicameral legislatures requires that proposed bills be passed, at least in the state's Lower House or the Vidhan Sabha and not mandatory to be passed in the Upper House or the State Vidhan Parishad. For states with unicameral legislatures, laws and bills need to be passed only in the state's Vidhan Sabha, for they don't have a Vidhan Parishad.
The process of addition, variation or repeal of any part of the constitution by the Parliament under its constituent powers, is called amendment of the constitution. The procedure is laid out in Article 368. An amendment bill must be passed by each House of the Parliament by a majority of the total membership of that House when at least two-thirds members are present and voted. In addition to this, certain amendments which pertain to the federal and judicial aspects of the constitution must be ratified by a majority of state legislatures. There is no provision for joint sitting of the two houses (Lok Sabha and Rajya Sabha) of the parliament to pass a constitutional amendment bill. Basic structure of the Indian constitution cannot be altered or destroyed through constitutional amendments under the constituent powers of the Parliament without undergoing judicial review by the Supreme Court. After the 24th amendment, parliament in its constituent capacity can not delegate its function of amending the constitution to another legislature or to itself in its ordinary legislative capacity.