A citizen is defined as a legal member of a state with full constitutional or legal rights in the country in which he or she resides. While an alien or a non-citizen is any individual who is not a national of a State in which he or she is present.
Bicameral Legislature is defined as a process or act of carrying out legislative functions by the two chambers in a state. There are the lower chamber and the upper chamber. Britain and the United States of America provide classical examples of bicameralism.