Explanation: In India, the major constitutional bodies are:

• Union Public Service Commission (UPSC)
• State Public Service Commission
• The Comptroller, and Auditor General of India
• Election Commission of India
• Finance Commission of India
• National Commission for Scheduled Castes
• National Commission For Scheduled Tribe
• Judges of High Courts and Supreme Court come under Comptroller and Auditor General, thus it is a constitutional post.
• The Attorney General of India is the primary lawyer of the Supreme Court and is the chief legal advisor. It is a constitutional post.

Source: Laxmikanth