Explain the functions of Public Service Commissions in detail.
The functions of Public Service Commissions are detailed in the context provided under PART XIV SERVICES UNDER THE UNION AND THE STATES, specifically in Chapter II. Public Service Commissions for the Union and for the States.

Public Service Commissions are responsible for various tasks including:

1. Appointment and term of office of members: They have the power to appoint members for a specific term or duration as per the rules.

2. Removal and suspension of a member of a Public Service Commission: They have the authority to remove or suspend any member of the commission under certain circumstances and following due process.

3. Power to make regulations as to conditions of service of members and staff of the Commission: They can formulate rules and regulations for the members and staff working under their jurisdiction, concerning their terms of service, remuneration, leaves, etc.

4. Prohibition as to the holding of offices by members of Commission on ceasing to be such members: Once a member ceases to be part of the commission, they are prohibited from holding any office under the Government of India or a State Government without prior permission from the President of India or Governor of the relevant state.

5. Functions of Public Service Commissions: They are responsible for conducting examinations and selecting suitable candidates for various services under the central government, state governments, and public sector undertakings. They also ensure fairness and transparency in the selection process by following a merit-based system.

6. Power to extend functions of Public Service Commissions: The Parliament has the power to extend the functions of these commissions if deemed necessary.

7. Expenses of Public Service Commisions: All expenses related to the functioning and maintenance of public service commissions are met by the central government or respective state governments.

8. Reports of Public Service Commissions: These commissions are required to submit annual reports on their activities and functions to the President of India or Governor of the relevant state, who may then lay these reports before each House of Parliament or the State Legislature.