Disadvantages Of Bi-Cameral Legislature More Expensive to Run: A lot of fund is needed to maintain two legislative chambers involved in bi-cameral legislature and other things that go with them.
Delay in Passing of Bills: Bi-cameralism causes serious delay in the process of law making unlike unicameralism.
Rivalry: It leads to unnecessary rivalry as to which of the houses is superior to the other.
Time of Emergencies; the delay in the passage of bills is not suitable in time of emergencies where actions are quickly taken.
Dumping Ground: The second chamber may be used as a dumping ground for political rejects at the polls if its membership is by nomination or appointment.
It could be undemocratic: Membership of upper legislative house in some countries such as Britain is not based on election. This is undemocratic.
Waste of Resources: Duplication of functions could result to waste of resources both human and financial.