Geography 2022 Paper I 50 marks Elucidate

Q3

(a) Plants and animals that exist in a particular ecosystem are those that have been successful in adjusting to their habitat and environmental conditions. Elucidate with examples. (20 marks) (b) With suitable examples describe the impacts of movement of airmasses on weather and winds in different parts of the continents. (15 marks) (c) Discuss the role of Slope, Altitude and Relief (SAR) in landscape development. (15 marks)

हिंदी में प्रश्न पढ़ें

(a) पादप एवं जन्तु जो एक विशिष्ट पारिस्थितिक तंत्र में रहते हैं वे अपने को उस प्राकृतिक-वास एवं पर्यावरणीय दशाओं से समाकूलन करने में सफल हो चुके हैं । उचित उदाहरणों द्वारा स्पष्ट कीजिए । (20 अंक) (b) उचित उदाहरणों द्वारा वायुराशियों के गतिमान होने पर महाद्वीपों के विभिन्न भागों में मौसम एवं पवनों पर पड़ने वाले प्रभावों का वर्णन कीजिए । (15 अंक) (c) भूदृश्य विकास में ढाल, ऊँचाई एवं उच्चावच की भूमिका की चर्चा कीजिए । (15 अंक)

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Directive word: Elucidate

This question asks you to elucidate. The directive word signals the depth of analysis expected, the structure of your answer, and the weight of evidence you must bring.

See our UPSC directive words guide for a full breakdown of how to respond to each command word.

How this answer will be evaluated

Approach

The directive 'elucidate' demands clear explanation with examples. Structure: brief introduction linking adaptation, airmass dynamics and geomorphic processes; body with ~40% word budget on (a) due to highest marks, ~30% each on (b) and (c); conclusion synthesizing how biotic adaptation, atmospheric circulation and terrain interact in landscape evolution. For (b) and (c), use secondary directives 'describe' and 'discuss' respectively.

Key points expected

  • (a) Ecological adaptation: morphological, physiological and behavioral adaptations of flora/fauna to abiotic (climate, soil) and biotic factors; examples like xerophytes in Thar, amphibians in Western Ghats, Bergmann's and Allen's rules
  • (a) Ecosystem stability through natural selection and niche specialization; reference to biome distribution (tropical rainforest vs. tundra)
  • (b) Airmass classification (cP, cT, mP, mT) and their source regions; modification through surface contact and orographic lifting
  • (b) Continental impacts: Siberian cP causing winter extremes in North India; mT airmass and monsoon burst; nor'westers and mango showers; Chinook and Santa Ana winds
  • (c) SAR as geomorphic agents: slope controls mass wasting and erosion rates; altitude affects weathering regimes and vegetation belts; relief influences drainage density and slope processes
  • (c) Indian examples: Himalayas showing altitudinal zonation; Western Ghats escarpment and rain shadow; Deccan plateau differential erosion

Evaluation rubric

DimensionWeightMax marksExcellentAveragePoor
Concept correctness22%11Precise scientific terminology throughout: for (a) distinguishes adaptation types and ecosystem concepts; for (b) correctly classifies airmasses (cP, mT, etc.) and explains modification processes; for (c) accurately links SAR to Davisian and Penckian models of landscape evolutionBasic concepts understood but some confusion between adaptation types, airmass characteristics, or slope-process relationships; minor errors in scientific terminologyFundamental misconceptions: conflates adaptation with acclimatization, confuses airmass types with fronts, or treats SAR as independent rather than interactive factors
Map / diagram18%9At least three quality diagrams: for (a) biome-climate relationship graph or adaptation illustration; for (b) world airmass map with Indian subcontinent inset showing seasonal shifts; for (c) slope-profile or block diagram of altitudinal belts in HimalayasTwo simple diagrams with basic labeling; or one detailed diagram covering only one sub-part; maps lack directional arrows or proper legendNo diagrams or only rough sketches without labels; diagrams contradict textual explanation or show wrong spatial relationships
Indian regional examples20%10Rich Indian specificity: for (a) Nilgiri tahr, Great Indian Bustard adaptations, mangrove pneumatophores; for (b) Loo, Kalbaisakhi, Western Disturbances; for (c) Shillong plateau, Aravalli old vs. Himalaya young relief, Matheran plateau edgeSome Indian examples but generic (mentioning Thar desert without specific species) or limited to one sub-part; international examples dominateEntirely foreign examples (Kangaroo, Sahara, Rockies) or no examples at all; fails to demonstrate understanding of Indian geographical conditions
Spatial analysis22%11Explicit spatial reasoning: latitudinal/altitudinal zonation in (a); trajectory mapping and seasonal shift patterns in (b); differential erosion patterns and slope-aspect controls in (c); integrates across parts to show landscape as biotic-atmospheric-geomorphic systemSome spatial awareness but descriptive rather than analytical; mentions 'north-facing slopes' or 'western coast' without explaining causal mechanismsAspatial treatment; treats examples as isolated cases without geographic context; no sense of distribution patterns or spatial interaction
Application / policy18%9Contemporary relevance: for (a) biosphere reserves and climate change adaptation strategies; for (b) aviation safety, agricultural planning around airmass forecasts; for (c) watershed management, landslide zonation mapping (NDMA), sustainable Himalayan developmentBrief mention of conservation or disaster management without elaboration; generic statements about 'sustainable development'No applied dimension; purely academic treatment ignoring management implications of ecological adaptation, weather forecasting needs, or terrain hazards

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