Which of the following is not a constitutional body?

Concept

A constitutional body is created directly by the Constitution of India; its authority, composition, or core functions rest on constitutional provisions. A body created only through an executive resolution or statute belongs to a different institutional category.

Application

Apply this test to each institution:

• Election Commission of India: Article 324 provides its constitutional basis.

• Finance Commission: Article 280 provides its constitutional basis.

• Union Public Service Commission: Articles 315–323 provide its constitutional basis.

• Planning Commission: it was constituted by a Government of India resolution dated 15 March 1950, so its origin was executive rather than constitutional.

Cross-check and result

Election Commission of India, Finance Commission, and Union Public Service Commission each have an explicit constitutional provision. The Planning Commission had no constitutional provision and was later replaced by NITI Aayog. Therefore, the Planning Commission is not a constitutional body.