Types of Legislature
There are several types of legislative bodies established by different countries:
Bicameralism is the practice where there are two legislative bodies. Advocates of the bicameralism claim that this system is less susceptible to bribery and control of big interests because the members of another chamber can check the other chamber. Hasty and ill-considered legislation past by the first chamber can be therefore be checked, modified or rejected by the other chamber. The United States and the Philippines operate under this system.
Multicameralism is the practice where there are more than two chambers. In 1983, the apartheid government of South Africa provided for a tricameral legislature perceived to be race-based. They were the House of Assembly - reserved for the whites; the House of Representatives - reserved for the colored or mixed race; and the House of Delegates - reserved for the Asians. That tricameral legislature was controversial and was not particularly strong.
photos sources: http://etc.usf.edu/clipart/6000/6027/legislature_1_lg.gif