Question map
With reference to 'Red Sanders', sometimes seen in the news, consider the following statements : 1. It is a tree species found in a part of South India. 2. It is one of the most important trees in the tropical rain forest arcas of South India. Which of the statements given above is/are correct?
Explanation
The correct answer is option A (1 only).
Pterocarpus santalinus is an Indian endemic tree species, commonly known as Red Sandalwood or Red Sanders.[1] Studies have documented Red Sanders in protected habitats in Andhra Pradesh, India[3], confirming that statement 1 is correct - it is indeed a tree species found in a part of South India.
However, statement 2 is incorrect. Red Sanders is not primarily associated with tropical rainforest areas. The species is found in dry deciduous forest regions of South India, particularly in Andhra Pradesh. The term "tropical rainforest" refers to evergreen forests with high rainfall, which is not the typical habitat for Red Sanders. While Red Sanders is reported to be one of India's most exploited tree species and is under severe pressure from illegal logging and harvesting[4], this exploitation relates to its commercial value rather than its ecological importance in tropical rainforests specifically.
Therefore, only statement 1 is correct, making option A the right answer.
Sources- [1] https://www.iucnredlist.org/species/pdf/187622484
- [2] https://www.iucnredlist.org/species/pdf/187622484
- [3] https://www.iucnredlist.org/species/pdf/187622484
- [4] https://www.downtoearth.org.in/wildlife-biodiversity/about-20-000-tonnes-of-red-sanders-were-smuggled-from-india-between-2016-and-2020-report-87458
PROVENANCE & STUDY PATTERN
Full viewThis is a classic 'Biome Swap' trap. The question validates if you know the specific ecological niche (Dry Deciduous) rather than just the broad region (South India). When a species hits the headlines (smuggling), map it instantly to its rainfall zone and forest type, not just its state.
This question can be broken into the following sub-statements. Tap a statement sentence to jump into its detailed analysis.
- Explicitly identifies Pterocarpus santalinus as an Indian endemic tree species.
- States its restricted geographic range in the Eastern Ghats, in the state of Andhra Pradesh (South India).
- Documents field research on Red Sanders specifically in Sri Lankamalleswara Wildlife Sanctuary, Andhra Pradesh, India.
- Provides location-level evidence of the species occurring in a protected area in South India.
- Refers to ecological research (pollination ecology) on Red Sanders and labels it an endemic and endangered tree species.
- Reinforces the species' status as native/endemic (implying occurrence in its native Indian range).
Notes that the Western Ghats (a South Indian region) have very diverse evergreen vegetation with dominance of valuable timber species (e.g., ebony).
A student could note that many valuable hardwoods occur in the Western Ghats and therefore check if Red Sanders is another hardwood native to that region.
Lists Western Ghats under Tropical Wet-evergreen and Semi-evergreen forests and examples of commercially important trees (rose-wood, sandalwood, ironwood) found there.
Use this pattern (Western Ghats as habitat for commercially valuable hardwoods) to hypothesize that Red Sanders, a valuable timber species, may also be found in South India and then verify from species-specific sources or maps.
States that tropical moist deciduous forests (including Sahyadris/Western Ghats) contain economically important trees including Sandalwood and Shisham.
Since related commercial hardwoods occur in these South Indian forest types, a student could check whether Red Sanders occupies similar forest types in peninsular India.
Shows that tropical dry deciduous forests extend into southern states (Andhra Pradesh, Karnataka, Tamil Nadu), indicating a range of forest types present in South India.
A student could use the map of these forest types and species' habitat preferences to narrow where to look for Red Sanders occurrences in South India.
- Explicitly refers to Red Sanders in the context of 'important tropical forest tree species', tying it to tropical forest importance.
- Mentions seed collection activities for Red Sanders, indicating management/recognition as an important species.
- Describes Red Sanders as 'one of India’s most exploited tree species', implying high value and importance.
- Notes severe pressure from illegal logging across its range, which is consistent with being a significant rainforest timber species.
- Reports a focused study on density, population structure and regeneration of Red Sanders in Sri Lankamalleswara Wildlife Sanctuary, Andhra Pradesh (South India).
- Demonstrates the species' presence and conservation attention in South Indian protected tropical habitats.
Describes the Western Ghats rainforests (Nilgiris, Anaimalai, Palani) as centres of dense, diverse evergreen vegetation where particular tree taxa (e.g., ebony) predominate.
A student could compare the known native range of Red Sanders with these Western Ghats localities to see if it overlaps the rainforest zones mentioned.
Defines where tropical evergreen/semi‑evergreen forests occur in India (western slope of Western Ghats, NE hills, Andaman) and describes their tall, diverse tree assemblages.
Use this to check whether Red Sanders is typically listed among the tall/important species in these specific evergreen forest regions.
States that trees constitute ~70% of rainforest flora and that many tree species coexist, implying importance is tied to abundance, economic value or dominance in the canopy.
A student could assess whether Red Sanders is abundant/dominant or economically significant among Western Ghats tree lists to judge 'most important'.
Lists economically important hardwoods in moist deciduous/Sahyadri forests (teak, sal, sandalwood, shisham, bamboo), showing which species are commonly considered 'important' in Peninsular forests.
Compare whether Red Sanders appears alongside these named hardwoods in regional species/economic lists to infer its relative importance.
Provides catalogue of species for different tropical forest types in Western Ghats (includes rosewood, sandalwood, ironwood, orchids etc.), illustrating the kinds of species regarded as characteristic/valuable there.
Use this pattern to check if Red Sanders is included in authoritative species lists for Western Ghats evergreen or moist deciduous forests.
- [THE VERDICT]: Trap. Statement 1 is a Sitter (South India), but Statement 2 is a subtle 'Biome Trap' (Rainforest vs. Dry Deciduous).
- [THE CONCEPTUAL TRIGGER]: News on Red Sanders smuggling (Operation Seshachalam) linked to Static Geography (Natural Vegetation > Tropical Dry Deciduous Forests).
- [THE HORIZONTAL EXPANSION]: Memorize the 'Timber-Biome' matrix: Rosewood/Ebony/Mahogany (Tropical Evergreen); Teak/Sal/Sandalwood/Shisham (Moist Deciduous); Red Sanders/Axlewood (Dry Deciduous); Acacias (Thorn). Note that Red Sanders is endemic specifically to the Seshachalam Hills (Eastern Ghats).
- [THE STRATEGIC METACOGNITION]: Do not equate 'South India' automatically with 'Rainforest'. The Eastern Ghats (Andhra) are largely dry/rocky. Always cross-reference a species' location with the rainfall map of that area.
Determining whether a species occurs in South India requires knowing the Western Ghats' role as the major rainforest/evergreen region where many tree species are distributed.
UPSC often asks about regional biodiversity, endemism and conservation in India; the Western Ghats repeatedly appear in such questions. Master this to link species occurrence to biogeographic regions and conservation policy. Study maps of the Western Ghats, major hill ranges (Nilgiris, Anaimalai, Palani) and lists of characteristic flora to answer distribution-type questions.
- Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 9: Indian Biodiversity Diverse Landscape > g.4.3. Tropical rai.n forest region > p. 159
- Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 4: BIODIVERSITY > social relevance of forests > p. 21
Knowing which forest types (wet-evergreen, moist deciduous, dry deciduous, thorn) occur in South India helps judge whether a given tree species is likely to be native or present there.
Questions on vegetation, ecology and resource distribution test familiarity with forest types and associated states/species. This concept connects climate, rainfall zones and species lists; learn typologies and state associations to eliminate or confirm likely habitats for species mentioned in questions.
- Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 4: BIODIVERSITY > social relevance of forests > p. 21
- Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 10: Indian Forest > 10.1.5. Tropical Dry deciduous forest > p. 161
Comparing known commercially important trees of South India with the queried species helps assess plausibility of occurrence in the region.
Economic botany and forestry topics are frequent in GS and optional papers—knowing which valuable timbers are native to peninsular/Western Ghats regions aids answers on resource use, trade and conservation. Compile species lists by forest type and state; focus on endemic and high-demand timbers.
- Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 5: Natural Vegetation and National Parks > Table 5.5 > p. 15
- Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 9: Indian Biodiversity Diverse Landscape > g.4.3. Tropical rai.n forest region > p. 159
- CONTEMPORARY INDIA-I ,Geography, Class IX . NCERT(Revised ed 2025) > Chapter 5: Natural Vegetation and Wildlife > Tropical Deciduous Forests > p. 40
The question concerns a South Indian rainforest species; several references describe Western Ghats/evergreen forest locations and typical tree assemblages.
High-yield for UPSC: knowing which tree species and vegetational types characterise Western Ghats helps answer distribution and biodiversity questions. It links to topics on biodiversity hotspots, biogeography and conservation. Prepare by memorising characteristic species and their zonation (evergreen vs moist deciduous) and practising map-based distribution questions.
- Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 9: Indian Biodiversity Diverse Landscape > g.4.3. Tropical rai.n forest region > p. 159
- INDIA PHYSICAL ENVIRONMENT, Geography Class XI (NCERT 2025 ed.) > Chapter 5: Natural Vegetation > Tropical Evergreen and Semi Evergreen Forests > p. 42
- Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 3: MAJOR BIOMES > 1. Tropical Evergreen Rainforest Biome > p. 5
The statement asks whether a timber species is 'one of the most important'; several references list commercially important species (teak, sandalwood, rosewood, shisham, ebony, etc.).
Important for questions on forest economy, resource management and environmental geography. Knowing commonly listed commercial species and which forest types they belong to helps in MCQs and short-answer questions about forest products and their regional occurrence. Learn by categorising species by forest type and economic use.
- CONTEMPORARY INDIA-I ,Geography, Class IX . NCERT(Revised ed 2025) > Chapter 5: Natural Vegetation and Wildlife > Tropical Deciduous Forests > p. 40
- Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 5: Natural Vegetation and National Parks > Table 5.5 > p. 15
- Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 10: Locational Factors of Economic Activities > Classification of Forest Areas > p. 23
Identifying whether a species is 'important in tropical rainforest areas of South India' requires knowing forest type distinctions and where they occur in peninsular India.
Frequently tested in geography and environment sections; understanding distinctions (rainforest vs moist deciduous vs dry deciduous) informs species distribution and conservation answers. Study NCERT summaries and make comparative tables of climate, location and characteristic species.
- Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 5: Natural Vegetation and National Parks > Table 5.5 > p. 15
- Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 30: Climatic Regions > Tropical Monsoon Forests > p. 433
- INDIA PHYSICAL ENVIRONMENT, Geography Class XI (NCERT 2025 ed.) > Chapter 5: Natural Vegetation > Tropical Evergreen and Semi Evergreen Forests > p. 42
Cycas beddomei. Like Red Sanders, this is another critically endangered species found ONLY in the Seshachalam Hills (Cuddapah district, Andhra Pradesh). If Red Sanders was the timber question, Cycas beddomei is the likely 'living fossil' sibling question from the same habitat.
Apply 'Rainfall Logic'. Red Sanders is famous for growing in the Rayalaseema region of Andhra Pradesh (Cuddapah/Chittoor). Rayalaseema is a known drought-prone/rain-shadow area. 'Tropical Rain Forest' requires >200cm rainfall. A drought region cannot host a Rain Forest. Thus, Statement 2 is geographically impossible.
Link this to GS-3 Internal Security: 'Linkages between Organized Crime and Terrorism'. Red Sanders smuggling is a major funding source for anti-social elements in the Rayalaseema region. It is also a classic case for CITES Appendix II trade restrictions (GS-2/3 Environment).