International organizations hold significant importance for the UPSC examination as they play vital roles in global governance, development, and diplomacy. Understanding their functions, like those of the UN, WTO, and WHO, helps aspirants grasp the dynamics of international relations and India's foreign policy. Knowledge of these organizations aids in discussing issues like development aid, global health, and trade regulations in the examination context. It also prepares candidates for questions related to India's participation in international treaties and collaborations, enhancing their analytical and contextual understanding.