Recombinant DNA technology enables scientists to transfer specific genes from one organism to another, even if they are unrelated species. This is possible because the genetic code is universal.

1️⃣ Across different species of plants ✔

• Genes can be transferred from one plant species to another.

• Example: Pest-resistant genes introduced into crops like cotton.

2️⃣ From animals to plants ✔

• Genes from animals can be inserted into plants.

• Since the genetic code is universal, plant cells can express animal genes if properly engineered.

3️⃣ From microorganisms to higher organisms ✔

• This is very common in biotechnology.

• Example: Bt cotton contains a gene from the bacterium Bacillus thuringiensis to resist insects.

• Human insulin is produced using bacteria through recombinant DNA technology.

• The Badami cave temples were built in the 6th century CE by the Chalukyas.

• However, the oldest surviving rock-cut caves in India are the Barabar Caves (3rd century BCE).

• The Barabar Caves (3rd century BCE) are the oldest surviving rock-cut caves in India.

• They were dedicated to the Ajivikas sect.

• However, they were mainly built by Ashoka and his grandson Dasharatha, not Chandragupta Maurya.

• The Ellora Caves (6th–10th century CE) include:

• Buddhist caves

• Hindu caves (including Kailasa Temple)

• Jain caves

• The Atlas Mountains are located in Northwest Africa.

• They extend across Morocco, Algeria, and Tunisia.

• They separate the Mediterranean coast from the Sahara Desert.

Abyssinian Plateau – Arabia

• The Abyssinian Plateau is located in Ethiopia (East Africa), not Arabia.

Guiana Highlands – Southwest Africa

• The Guiana Highlands are located in northern South America (Venezuela, Guyana, Brazil), not Africa.

Okavango Basin – Patagonia

• The Okavango Basin is in Botswana (Southern Africa).

• Patagonia is in southern Argentina and Chile (South America).

Under Article 156 of the Constitution of India:

• The Governor holds office for a term of five years.

• However, he/she holds office “during the pleasure of the President.”

🔎 What Does “Pleasure of the President” Mean?

• The Constitution does not lay down any specific procedure for removal.

• No impeachment process (unlike the President under Article 61).

• No requirement to state reasons.

• The Governor can be removed at any time by the President.

Since the President acts on the aid and advice of the Union Council of Ministers, the removal is effectively decided by the Central Government.

⚖️ Important Supreme Court Judgment

B.P. Singhal v. Union of India

The Supreme Court held that:

• Governors cannot be removed arbitrarily.

• Though no formal procedure is prescribed, removal must not be capricious, unreasonable, or based on mala fide grounds.

• However, the Court also clarified that reasons for removal need not be disclosed.

📌 Conclusion

The Constitution of India does not provide a detailed procedure for the removal of a Governor.
The Governor serves at the pleasure of the President, and removal is based on executive decision, subject to limited judicial review.

📜 Constitutional Provisions (Articles 153–162, 163–167, 174–213)

• Article 153 – There shall be a Governor for each State

• Article 154 – Executive power of the State vested in the Governor

• Article 155 – Appointment by the President

• Article 156 – Holds office during the pleasure of the President (5-year term)

• Article 157–158 – Qualifications and conditions of office

• Article 159 – Oath of office

• Article 161 – Power to grant pardon

• Article 163 – Governor to act on aid and advice of Council of Ministers

• Article 174 – Summon, prorogue, dissolve Legislative Assembly

• Article 200 – Assent to bills

• Article 213 – Ordinance-making power

⚖️ Role and Powers of the Governor

1️⃣ Executive Powers

• Appoints the Chief Minister

• Appoints other ministers on CM’s advice

• Appoints Advocate General, State Election Commissioner, etc.

• Acts as a link between State and Union Government

2️⃣ Legislative Powers

• Summons and prorogues State Legislature

• Dissolves Legislative Assembly

• Addresses first session after general elections

• Can reserve a bill for the President’s consideration

• Promulgates Ordinances when legislature is not in session

3️⃣ Financial Powers

• No Money Bill can be introduced without Governor’s recommendation

• Causes State Budget to be laid before Legislature

• Controls Contingency Fund of the State

4️⃣ Judicial Powers

• Can grant pardon, reprieve, respite, or remission of punishment (Article 161)

• Consulted in appointment of High Court judges

5️⃣ Discretionary Powers

• Appointment of CM when no clear majority

• Reservation of certain bills for President

• Sending report to President recommending President’s Rule (Article 356)

🏛 Important Supreme Court Judgments

• Shamsher Singh v. State of Punjab – Governor acts on aid and advice of Council of Ministers except in discretionary matters.

• S.R. Bommai v. Union of India – Limited misuse of Article 356 (President’s Rule).

🔎 Position of Governor

• Nominal executive head

• Real executive power lies with the Council of Ministers

• Acts as a constitutional guardian of the State

📌 Conclusion

The Governor plays a dual role:

• Constitutional head of the State

• Representative of the Union Government

While most powers are exercised on the advice of the Council of Ministers, certain discretionary powers make the office politically significant.

✅ Constitutional Position (Article 109 of the Indian Constitution)

• A Money Bill can be introduced only in the Lok Sabha.

• After passing in Lok Sabha, it is sent to Rajya Sabha.

• Rajya Sabha cannot amend or reject a Money Bill.

• It can only make recommendations within 14 days.

📌 If Rajya Sabha Makes Amendments (Recommendations):

1. The amended bill (with recommendations) is sent back to the Lok Sabha.

2. Lok Sabha may either accept or reject any or all recommendations.

3. If Lok Sabha rejects the amendments, the bill is considered passed in the form originally passed by Lok Sabha.

🔎 So, If Rajya Sabha Substantially Amends It:

• Those amendments are treated only as recommendations.

• If Lok Sabha does not accept them, they have no effect.

• There is no joint sitting in case of a Money Bill.

• The decision of Lok Sabha is final.

Final Conclusion:

If the Money Bill is substantially amended by the Rajya Sabha, the amendments will not be binding. The Lok Sabha can reject them, and the bill will be deemed passed in its original form.

Inter-relationship between Tectonic Settings and Igneous Rock Suites

Introduction

Magmatism and tectonics are closely interrelated processes reflecting the thermal and dynamic state of the Earth’s interior. Different tectonic settings control the source of magma, melting mechanism, magma composition and style of emplacement, resulting in characteristic igneous rock suites. Hence, specific igneous associations can be used to interpret past tectonic environments.

1. Divergent Plate Boundaries (Constructive Margins)

Tectonic Setting

• Mid-ocean ridges and continental rifts

• Lithosphere undergoes extension and thinning

Magma Generation

• Decompression melting of upwelling asthenospheric mantle

Igneous Rock Suites

• Tholeiitic basalt

• Gabbro, dolerite

• Sheet dykes and pillow lavas

Characteristics

• Low K₂O, low volatile content

• Dominantly mafic composition

• Forms new oceanic crust

Example

• Mid-Atlantic Ridge

• East African Rift (continental)

2. Convergent Plate Boundaries (Destructive Margins)

(a) Ocean–Ocean Subduction

Magma Generation

• Flux melting due to addition of H₂O from subducting slab

Igneous Rock Suites

• Island-arc tholeiite

• Andesite, basaltic andesite

• Diorite, tonalite

Characteristics

• Calc-alkaline affinity

• Enrichment in LILEs

Example

• Mariana Arc

(b) Ocean–Continent Subduction

Magma Generation

• Partial melting of mantle wedge + crustal contamination

Igneous Rock Suites

• Calc-alkaline series

• Andesite, dacite, rhyolite

• Granodiorite, granite

Characteristics

• Intermediate to felsic composition

• High water content

• Explosive volcanism

Example

• Andes Mountains

(c) Continent–Continent Collision

Tectonic Setting

• Thickened crust, high pressure–temperature conditions

Magma Generation

• Partial melting of lower continental crust

Igneous Rock Suites

• S-type granites

• Leucogranites

Example

• Himalayan granites

3. Intraplate (Within-Plate) Settings

(a) Hotspots (Mantle Plumes)

Magma Generation

• Deep mantle plume melting

Igneous Rock Suites

• Alkaline basalts

• Tholeiitic flood basalts

• Trachyte, phonolite

Characteristics

• Enriched in incompatible elements

Examples

• Hawaiian Islands

• Deccan Traps (India)

(b) Continental Rift Zones

Magma Types

• Alkaline basalts

• Carbonatites

• Kimberlites

Characteristics

• High alkali content

• Deep mantle source

Example

• East African Rift

4. Ophiolite Suites (Ancient Oceanic Crust)

Tectonic Setting

• Obducted oceanic lithosphere at convergent margins

Typical Rock Association

• Peridotite (mantle)

• Gabbro

• Sheet dykes

• Pillow basalt

• Pelagic sediments

Example

• Semail Ophiolite (Oman)

• Indian ophiolites (Naga Hills)

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