Arrange the following varieties of silk in India in their order of decreasing production: 1. Muga 2. Eri 3. Mulberry 4. Tasar Select the correct answer using the code given below:

1. Introduction to Sericulture in India (basic)

Sericulture, or silk farming, is the art and science of rearing silkworms to produce raw silk. It is a highly labor-intensive, agro-based industry that perfectly blends agriculture with industry. India holds a prestigious position on the global map, ranking as the second-largest producer of silk in the world, contributing roughly 18% of global production Geography of India (Majid Husain), Industries, p.25. Historically, while silk production was a household industry during the Mughal era, it took a formal industrial turn with the establishment of the first silk mill in Haora in 1832 by the East India Company Geography of India (Majid Husain), Industries, p.25. What truly distinguishes India from other silk-producing nations like China or Japan is its incredible biodiversity in silk varieties. India is the only country in the world that commercially produces all four known varieties of silk: Mulberry, Eri, Tasar, and Muga. Among these, Mulberry silk is the most dominant, accounting for the vast majority of total production. The other three are often grouped as 'Vanya' (wild) silks, with Eri silk being the most significant among them in terms of volume, followed by Tasar and finally Muga Geography of India (Majid Husain), Agriculture, p.94. Geographically, the industry is largely concentrated between 15° and 34° N latitudes. The state of Karnataka is the undisputed leader, contributing approximately 65% of India's raw silk, followed by Andhra Pradesh and West Bengal Geography of India (Majid Husain), Agriculture, p.95. A point of immense national pride is India's monopoly on Muga silk, a golden-hued variety produced almost exclusively in the state of Assam Geography of India (Majid Husain), Industries, p.25.

Variety	Nature	Primary Producing Region
Mulberry	Domesticated (Bombyx mori)	Karnataka, Andhra Pradesh, Tamil Nadu
Eri	Wild / Vanya	Assam and North-Eastern states
Tasar	Wild / Vanya	Jharkhand, Chhattisgarh, Odisha
Muga	Wild (Golden Silk)	Assam (Global Monopoly)

Sources: Geography of India (Majid Husain), Agriculture, p.94-95; Geography of India (Majid Husain), Industries, p.25

2. Geographical Distribution of Silk Production (intermediate)

In the world of sericulture, India occupies a truly unique position: it is the only country in the world that commercially produces all four known varieties of silk—Mulberry, Eri, Tasar, and Muga. Geographically, silk production is primarily concentrated between the latitudes of 15° and 34° N, where climatic conditions support the growth of host plants and the development of silkworms Geography of India, Agriculture, p.95. This production is broadly categorized into Mulberry silk (cultivated) and Vanya silk (wild varieties including Eri, Tasar, and Muga).

The distribution of these varieties is heavily region-specific. Mulberry silk is the titan of the industry, accounting for nearly 70-79% of total production. Karnataka is the undisputed leader here, contributing about 65% of India's raw silk, with major centers like Mysore, Bangalore, and Tumkur Geography of India, Agriculture, p.95. Interestingly, while Karnataka produces the bulk of the yarn, it is often exported to traditional weaving clusters in other states like Kancheepuram (Tamil Nadu) and Varanasi (Uttar Pradesh) to be turned into famous textiles Geography of India, Industries, p.25.

Among the non-mulberry silks, Eri silk (often called 'peace silk') has grown to become the second-largest variety, predominantly produced in the North-eastern states like Assam and Meghalaya. Tasar silk is the third most produced, largely sourced from the tropical forest belts of Jharkhand, Chhattisgarh, and Odisha by tribal communities. Finally, Muga silk is the rarest; it is a golden-yellow silk that is a near-monopoly of Assam, as the specific silkworm (Antheraea assamensis) thrives only in the Brahmaputra valley Geography of India, Industries, p.26.

Sources: Geography of India, Agriculture, p.95; Geography of India, Industries, p.25-26

3. Institutional Framework: Central Silk Board & Schemes (intermediate)

India occupies a unique position on the global map as the only country producing all four commercial varieties of silk: Mulberry, Eri, Tasar, and Muga. To manage this diverse sector, the Central Silk Board (CSB) was established as a statutory body in 1948 under the Ministry of Textiles. The CSB acts as the apex body for silk development, focusing on Research & Development (R&D), maintaining quality standards, and implementing the flagship scheme 'Silk Samagra'. This scheme aims to improve the productivity and quality of Indian silk to make it internationally competitive through technology up-gradation and seed support.

While the silk industry is spread across many states, production is highly concentrated. Karnataka remains the undisputed leader in silk production, particularly Mulberry silk, with major centers like Bangalore, Mysore, and Tumkur Geography of India, Industries, p.25. Other significant contributors include Andhra Pradesh, West Bengal, and Tamil Nadu. In the North-East, Assam serves as the hub for 'Vanya' (wild) silks, especially the golden Muga silk, for which it holds a near-monopoly Geography of India, Industries, p.26.

Understanding the production hierarchy is crucial for grasping India's agricultural output patterns. Mulberry silk is the most dominant, followed by the three 'Vanya' silks in a specific order of volume:

Variety	Production Share (Approx.)	Key Characteristics
Mulberry	~70-79%	Most common; dominated by Karnataka and South India.
Eri	~20%	Also called 'Ahimsa silk'; largely produced in Assam and Meghalaya.
Tasar	~8%	Produced mainly in the tribal belts of Jharkhand, Chhattisgarh, and Odisha.
Muga	<1%	Exquisite golden silk; Geographical Indication (GI) of Assam.

Sources: Geography of India, Industries, p.25; Geography of India, Industries, p.26

4. Comparative Analysis of Natural Fibres (Cotton vs. Jute vs. Silk) (intermediate)

To understand India's agricultural landscape, we must distinguish between the three giants of the textile sector: Cotton, Jute, and Silk. While Cotton and Jute are plant-based fibres derived directly from the soil, Silk is an animal-based fibre obtained through sericulture — the rearing of silkworms. India holds a prestigious global position in these crops, ranking as the second-largest producer of both cotton and silk globally Majid Husain, Geography of India, p.8, 25. Each fibre plays a unique role in the economy: Cotton is the backbone of the industrial textile sector, Jute is the eco-friendly 'Golden Fibre' used for packaging, and Silk remains a high-value luxury commodity with deep roots in Indian heritage.
Cotton and Jute face specific challenges despite India's high production volumes. For instance, while India is a top producer of cotton, there is a persistent shortage of long-staple cotton, necessitating imports from countries like Egypt and the USA Majid Husain, Geography of India, p.17. Similarly, despite being a major jute hub, India occasionally imports raw jute from Bangladesh to meet industrial demands Majid Husain, Geography of India, p.22. To address these gaps, the government focuses on the Silver Fibre Revolution (for Cotton) and the Golden Fibre Revolution (for Jute) to boost productivity and quality.
India’s silk production is particularly fascinating because it is the only country in the world that commercially produces all four varieties of silk: Mulberry, Eri, Tasar, and Muga. Mulberry silk is the undisputed leader, accounting for roughly 70-79% of the total output. Among the non-mulberry or 'Vanya' silks, Eri silk (often called the 'Ahimsa silk') is the second most produced, followed by Tasar. Muga silk, famous for its natural golden glow, is a geographical monopoly of Assam and has the smallest production share, accounting for less than 1% of the total Majid Husain, Geography of India, p.25.

Feature	Cotton	Jute	Silk
Type	Plant (Seed hair)	Plant (Bast fibre)	Animal (Cocoon)
Nickname	Silver Fibre	Golden Fibre	Queen of Fibres
Global Rank	2nd (after China)	Major Producer	2nd (after China)

Sources: NCERT, Contemporary India II, Chapter 4: Agriculture/The Age of Industrialisation, p.87; Majid Husain, Geography of India, Industries, p.8, 17, 22, 25

5. GI Tags and Traditional Silk Weaving Clusters (exam-level)

India holds a unique global position in sericulture as the only country that produces all four commercial varieties of silk: Mulberry, Eri, Tasar, and Muga. While most people associate silk with the mulberry-fed silkworm (Bombyx mori), India is particularly famous for its "Vanya" or wild silks. Among these, Muga silk is a prestigious monopoly of Assam, known for its natural golden luster and extreme durability. In terms of production volume, Mulberry silk is the undisputed leader, accounting for nearly 70-79% of India's total output, followed by Eri silk (often called "Ahimsa silk" because the moth is allowed to emerge from the cocoon), Tasar, and finally Muga, which represents less than 1% of total production. This hierarchy is vital for understanding agricultural economy patterns across different states NCERT, Contemporary India II, p.87.

The geography of silk weaving in India is a map of traditional clusters, many of which are protected by Geographical Indication (GI) Tags. These tags ensure that the specific "ornamental or aesthetic aspect" and traditional methods of a region are legally protected Indian Economy, International Organizations, p.387. Karnataka is the heavyweight in this sector, with centers like Mysore and Channapatna serving as hubs that export yarn to famous weaving clusters across South India Geography of India, Industries, p.25. Other critical clusters include Kancheepuram in Tamil Nadu, Bhagalpur in Bihar (famous for Tasar), and Murshidabad in West Bengal Geography of India, Industries, p.26.

Silk Variety	Primary Producing Regions	Key Characteristics
Mulberry	Karnataka, Andhra Pradesh, Tamil Nadu	Highest production; domesticated silkworms.
Eri	Assam, Meghalaya, Nagaland	Second highest production; woolly texture.
Tasar	Jharkhand, Chhattisgarh, Odisha	Copperish color; wild variety (Vanya).
Muga	Assam (Monopoly)	Lowest production; natural golden yellow hue.

Sources: NCERT, Contemporary India II, The Age of Industrialisation, p.87; Indian Economy, Vivek Singh, International Organizations, p.387; Geography of India, Majid Husain, Industries, p.25-26

6. Characteristics of the Four Major Indian Silks (exam-level)

India holds a unique and prestigious position in the global textile landscape as the only country in the world that produces all four commercial varieties of silk: Mulberry, Tasar, Eri, and Muga. While China remains the global leader in volume, India is the second-largest producer, contributing approximately 18% to the world's total silk output Geography of India, Industries, p.25. Historically, silk was a household industry that received significant patronage from the Mughal emperors, but it was the East India Company that established the first modern silk mill in Haora in 1832 Geography of India, Industries, p.25.

Silks are broadly classified into two categories: Mulberry and Vanya (Wild) silks. Mulberry silk is the most dominant, accounting for nearly 70-79% of India's total production. It is prized for its fine texture and luster. The non-mulberry silks, often called 'Vanya' silks, have distinct characteristics and regional roots. Among them, Eri silk (often called 'Ahimsa silk') has seen a surge in production, becoming the second most produced silk in India. Tasar silk, primarily produced in the tribal belts of Jharkhand, Chhattisgarh, and Odisha, is known for its copperish color. Finally, Muga silk is India's pride; it has a natural golden-yellow tint and is a geographical monopoly of Assam Geography of India, Industries, p.25.

Variety	Primary Producing Regions	Key Characteristic
Mulberry	Karnataka, Andhra Pradesh, West Bengal, Tamil Nadu, J&K	Most common; domesticated silkworms (Bombyx mori).
Eri	Assam and North Eastern States	Soft, warm, and often processed without killing the pupa (Ahimsa).
Tasar	Jharkhand, Bihar, Chhattisgarh, Madhya Pradesh	Wild silk; high copper-like luster and durability.
Muga	Assam (Exclusive)	Golden-yellow color; extremely durable and rare.

Geographically, the silk industry is widely distributed. In West Bengal, hubs like Maldah are famous, while in Andhra Pradesh, Anantapur and Chittoor lead production Geography of India, Industries, p.26. In the North, Jammu and Kashmir centers like Anantnag and Srinagar maintain a long-standing tradition of high-quality silk weaving Geography of India, Industries, p.26.

Sources: Geography of India (Majid Husain), Industries, p.25; Geography of India (Majid Husain), Industries, p.26

7. Silk Production Statistics and Ranking (exam-level)

In the global landscape of sericulture, India holds a prestigious position. It is the second-largest producer of silk in the world, trailing only behind China, and contributes approximately 18% of global production Geography of India, Majid Husain, Industries, p.25. What makes India truly unique, however, is its biodiversity in silk; it is the only country that produces all five commercial varieties of silk: Mulberry, Tropical Tasar, Oak Tasar, Eri, and Muga Geography of India, Majid Husain, Agriculture, p.95. While silk has deep roots in Indian history — favored by the Mughals and exported for centuries — the modern industry took shape with the first silk mill established in Haora in 1832 Geography of India, Majid Husain, Industries, p.25.

The production pattern across these varieties is highly skewed. Mulberry silk is the undisputed leader, accounting for roughly 70-79% of India's total output. The remaining varieties are collectively known as Vanya (wild) silks. Among them, Eri silk has seen significant growth and now stands as the second-most produced variety (approx. 20%). Tasar silk follows in third place. At the bottom of the volume list, though highly prized for its golden luster, is Muga silk. Muga is particularly special because India holds a virtual global monopoly on it, with production concentrated almost entirely in Assam Geography of India, Majid Husain, Industries, p.25.

Historically, production has seen a massive upward trajectory. From a modest 52.5 lakh kg in 1950-51, raw silk production surged to 326.8 lakh kg by 2017-18 Geography of India, Majid Husain, Agriculture, p.96. This growth reflects the transition of sericulture from a household activity to a robust agro-based industry that supports millions of rural livelihoods.

Comparison of Silk Varieties by Production Share

Rank	Variety	Approx. Share	Key Region
1	Mulberry	~70-79%	Karnataka, AP, Tamil Nadu
2	Eri	~20%	Assam, North-East
3	Tasar	~8%	Jharkhand, Chhattisgarh, Odisha
4	Muga	<1%	Assam (Monopoly)

Sources: Geography of India, Industries, p.25; Geography of India, Agriculture, p.95; Geography of India, Agriculture, p.96

8. Solving the Original PYQ (exam-level)

This question perfectly bridges your understanding of India's unique position in sericulture—as the only country producing all four commercial silks—with the specific economic output of each variety. While you have learned about the geographical distribution and host plants of these silks, the UPSC tests your ability to prioritize them by volume of production. The fundamental building block here is recognizing the distinction between Mulberry silk, which is highly commercialized and domesticated, and the three "wild" or Vanya silks (Eri, Tasar, and Muga), which have more localized and traditional production footprints.

To arrive at the correct answer, your reasoning should start with identifying the clear leader: Mulberry (3), which is the backbone of the industry and consistently accounts for the vast majority (roughly 70-79%) of India's total output. Next, you must distinguish between the non-mulberry varieties. A crucial contemporary detail to remember is the rise of Eri (2), which has now firmly established itself as the second-largest variety due to its extensive cultivation in North-East India. This is followed by Tasar (4), leaving the geographically restricted and rare Muga (1)—the "Golden Silk of Assam"—as the variety with the lowest production volume (less than 1%). This logical progression leads us directly to the sequence (A) 3 - 2 - 4 - 1.

The common trap in this question lies in Option (B), which places Tasar before Eri. Historically, many learners associate Tasar with being the primary "wild" silk, and some older textbooks might reflect outdated rankings; however, modern data from the Ministry of Statistics and Programme Implementation (MoSPI) confirms Eri's significant lead. Options (C) and (D) are distractors that incorrectly place Vanya silks at the top of the list. Remember: while Muga is the most expensive and prestigious, prestige does not equate to volume, and in a decreasing production list, it will almost always be the final element.