Who/Which of the following is the custodian of the Constitution of India?

Updated 11 Apr 2026 · From UPSC Prelims GS Paper I 2015, Q42

Contents12
UPSC Prelims GS2015Indian Polity
  1. AThe President of India
  2. BThe Prime Minister of India
  3. CThe Lok Sabha Secretariat
  4. DThe Supreme Court of India
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Answer: (D) The Supreme Court of India

As per CBSE Legal Studies textbook (Unit 4, Chapter 1, pg 165):

The Supreme Court of India is considered the custodian and guardian of the Constitution.

In a parliamentary democracy like India, the Constitution is the supreme law, and someone must ensure that no one — not Parliament, not the executive, not the states — violates it.

That role belongs to the Supreme Court through its power of JUDICIAL REVIEW (the authority to examine whether any law or executive action is consistent with the Constitution and to strike it down if it is not).

The Supreme Court protects the Constitution by:

(1) interpreting constitutional provisions and settling disputes about their meaning,

(2) striking down laws that violate fundamental rights or exceed legislative competence (Article 13),

(3) deciding disputes between the Union and States or between States (Article 131), and

(4) protecting citizens' fundamental rights through writs under Article 32.

Why are the other options wrong?

(a) The President is the HEAD OF STATE and takes an oath to 'preserve, protect and defend' the Constitution, but the President acts on the advice of the Council of Ministers (Article 74) and cannot independently review laws for constitutionality.

(b) The Prime Minister heads the government but does not perform the judicial review function.

(c) The Lok Sabha Secretariat is an administrative body that assists Parliament — it has no constitutional guardianship role.

Key concept:

Custodian of Constitution = Supreme Court (through judicial review).

Guardian of public purse = Comptroller and Auditor General (CAG).

Why this was asked

The Supreme Court alone has the power to strike down laws and executive actions that violate the Constitution through judicial review.

Students often confuse the President as custodian because the President takes an oath to 'preserve, protect and defend' the Constitution, but the President cannot independently review laws for constitutionality.

Supreme Court as Constitutional Custodian

Indian Polity Supreme Court custodian Constitution

Supreme Court as Custodian of Constitution: Powers & Functions

Must know

Supreme Court is the custodian and guardian of the Constitution of India

Custodianship exercised through judicial review power - examining laws for constitutional validity

Article 32 gives Supreme Court power to issue writs for fundamental rights protection

Good to know

Can strike down laws violating Constitution under Article 13

In India's parliamentary democracy, the Constitution is supreme law. The Supreme Court acts as its custodian by ensuring no authority - Parliament, executive, or states - violates constitutional provisions. This guardianship operates through judicial review, the power to examine and strike down unconstitutional laws or actions.

Constitutional Custodianship Functions

Function

Constitutional Provision

Mechanism

Example

Interpreting Constitution

Article 141

Constitutional bench decisions

Basic Structure Doctrine in Kesavananda Bharati case

Striking down laws

Article 13

Judicial review of legislation

Section 66A of IT Act struck down

Union-State disputes

Article 131

Original jurisdiction

River water disputes, boundary disputes

Fundamental rights protection

Article 32

Writ jurisdiction

Habeas corpus, mandamus writs

Why Supreme Court (Not Others)

Independence: Judges have security of tenure and cannot be easily removed

Final authority: Supreme Court decisions are binding on all courts and authorities

Constitutional mandate: Article 124-147 establish Supreme Court's role in constitutional interpretation

Separation of powers: Executive and legislature cannot review their own constitutional compliance

Exam traps

Trap: President takes oath to 'preserve, protect, defend' Constitution but acts on ministerial advice - cannot independently review laws

Confusion: Prime Minister heads government but has no judicial review function

Wrong pairing: Custodian of Constitution = Supreme Court; Guardian of public purse = CAG (different roles)

Article mix-up: Article 32 = Right to Constitutional Remedies; Article 131 = Supreme Court's original jurisdiction

Judicial Review in India

Indian Polity judicial review

Judicial Review: Supreme Court's Primary Constitutional Tool

Must know

Judicial review = power to examine laws/actions for constitutional validity

Article 13 declares laws violating fundamental rights as void

Good to know

Both legislative and executive actions can be reviewed

Basic Structure Doctrine limits even constitutional amendments

Judicial review empowers courts to examine whether laws or executive actions comply with the Constitution. Unlike the US where it's implied, India's judicial review is explicit through Article 13 which states laws violating fundamental rights are void.

Judicial Review Process

%%{init: {"flowchart": {"wrappingWidth": 460}}}%%
flowchart TD
  s1["`**Challenge Filed**
Petition filed questioning law/action's constitutional validity`"]
  s2["`**Constitutional Bench**
5+ judge bench formed for constitutional questions`"]
  s3["`**Constitutional Test**
Law examined against fundamental rights, federal structure, basic structure`"]
  s4["`**Judgment**
Law upheld, struck down, or read down to make it constitutional`"]
  s1 --> s2
  s2 --> s3
  s3 --> s4

Types of Judicial Review

Type

Target

Constitutional Basis

Famous Case

Legislative review

Parliament/state laws

Article 13, 245-254

Minerva Mills case (42nd Amendment provisions)

Executive review

Government actions/orders

Article 14, 19, 21

ADM Jabalpur case (Emergency detention)

Constitutional review

Constitutional amendments

Basic Structure (implied)

Kesavananda Bharati case

Article 32 - Right to Constitutional Remedies

Indian Polity Article 32

Article 32: 'Heart and Soul' of the Constitution

Must know

Article 32 = Right to Constitutional Remedies, called 'heart and soul' by Dr. Ambedkar

Empowers Supreme Court to issue five types of writs

Good to know

Can be suspended only during Emergency (Article 359)

Direct access to Supreme Court for fundamental rights violations

Article 32 guarantees the right to approach Supreme Court directly when fundamental rights are violated. Dr. Ambedkar called it the 'heart and soul' of the Constitution because without enforcement mechanism, rights remain mere paper declarations.

Five Constitutional Writs

Writ

Meaning

When Used

Against Whom

Habeas Corpus

Have the body

Illegal detention

Any person detaining illegally

Mandamus

We command

Compel performance of duty

Public officials

Prohibition

To prohibit

Stop inferior court from exceeding jurisdiction

Lower courts/tribunals

Certiorari

To be certified

Quash orders of inferior courts

Lower courts/tribunals

Quo-Warranto

By what authority

Challenge illegal appointment to public office

Person holding office illegally

Key Features of Article 32

Guaranteed right: Cannot be taken away except during Emergency under Article 359

Wide jurisdiction: Supreme Court can issue writs throughout India's territory

Constitutional court: Makes Supreme Court a constitutional court, not just appellate court

Self-executing: No implementing legislation needed - directly enforceable

Exam traps

Article confusion: Article 32 = Supreme Court writs; Article 226 = High Court writs (broader power)

Emergency trap: Article 32 can be suspended during Emergency, but Article 20 and 21 cannot be suspended

Writ limitation: Prohibition and Certiorari only against judicial/quasi-judicial bodies, not pure administrative actions

Constitutional Roles of Key Authorities

Indian Polity President Prime Minister Lok Sabha Secretariat

Constitutional Roles: President, PM & Parliamentary Bodies

Must know

President = Head of State, acts on ministerial advice (Article 74)

Prime Minister = Head of Government, leads executive but no judicial review power

Good to know

Lok Sabha Secretariat = Administrative body assisting Parliament

Constitutional Roles Compared

Authority

Constitutional Role

Key Powers

Constitutional Limitations

President

Head of State, Executive head

Assent to bills, Emergency powers, Commander-in-Chief

Acts on ministerial advice (Article 74)

Prime Minister

Head of Government

Leader of Lok Sabha, Cabinet head, Policy direction

Accountable to Parliament, no judicial powers

Supreme Court

Custodian of Constitution

Judicial review, Constitutional interpretation, Writ jurisdiction

Cannot initiate cases suo moto in most matters

Lok Sabha Secretariat

Parliamentary administration

House procedures, Record keeping, Member services

No legislative or judicial functions

Why Others Cannot Be Constitutional Custodians

President's limitation: Bound by Article 74 to act on ministerial advice - cannot independently review constitutionality

PM's role: Heads government and makes policy but cannot strike down laws or interpret Constitution

Secretariat function: Administrative support body with no constitutional interpretation or enforcement powers

Separation principle: Only judiciary can review legislative and executive actions for constitutional compliance

Exam traps

President's oath trap: Takes oath to 'preserve, protect, defend' Constitution but this doesn't make President the custodian

PM confusion: Heads government and Council of Ministers but constitutional custodianship requires judicial independence

Secretariat mix-up: Lok Sabha Secretariat assists Parliament but has no constitutional guardianship role