Q7
(a) Enlist the different commercial flowers cultivated on a large scale for cut flower trade. Briefly discuss the factors affecting the keeping quality of cut flowers and the remedies. 20 (b) Discuss photorespiration. What is the relationship between photorespiration and photosynthesis? 20 (c) Enlist and explain the issues and challenges in the growth of food processing industry in India. 10
हिंदी में प्रश्न पढ़ें
(क) कटे हुए फूलों के व्यापार के लिए व्यापक स्तर पर उगाए जाने वाले विभिन्न व्यावसायिक फूलों की सूची बनाइए। कटे हुए फूलों की भंडारण गुणवत्ता को प्रभावित करने वाले कारकों और उनके उपचारों का संक्षेप में वर्णन कीजिए। 20 (ख) प्रकाश-श्वसन (फोटोरेस्पिरेशन) का वर्णन कीजिए। प्रकाश-श्वसन और प्रकाश-संश्लेषण के बीच क्या संबंध है? 20 (ग) भारत में खाद्य प्रसंस्करण उद्योग के विकास में आने वाले मुद्दे और चुनौतियों की सूची बनाइए और उनकी व्याख्या कीजिए। 10
Directive word: Discuss
This question asks you to discuss. 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 'discuss' demands a comprehensive, analytical treatment with balanced coverage across all three sub-parts. Allocate approximately 40% of time/words to part (a) given its 20 marks, 35% to part (b) for its conceptual depth, and 25% to part (c). Structure as: brief introduction on commercial floriculture's economic significance → systematic treatment of (a) with enumerated flowers and quality factors → (b) with biochemical explanation and relationship analysis → (c) with sector-specific challenges → concluding synthesis on integrated value chain development.
Key points expected
- Part (a): Major commercial cut flowers (rose, carnation, chrysanthemum, gerbera, orchid, anthurium, lilium, tulip) with Indian production hubs like Bengaluru, Pune, Hyderabad; factors affecting keeping quality (ethylene production, water stress, temperature, microbial load) and remedies (STS/silver thiosulphate, 8-HQC, refrigerated transport, pulsing solutions)
- Part (a): Post-harvest physiology specifics—role of ACC synthase, membrane integrity loss, carbohydrate depletion; cold chain infrastructure gaps in India
- Part (b): Photorespiration mechanism—Rubisco oxygenase activity, glycolate pathway in peroxisomes-mitochondria-chloroplast shuttle; C2 cycle energy costs (loss of 25% fixed carbon)
- Part (b): Relationship with photosynthesis—competitive inhibition at Rubisco active site, CO2/O2 ratio dependence, evolutionary divergence between C3 (high photorespiration) and C4/CAM (minimized) pathways
- Part (c): Food processing sector challenges—supply chain fragmentation (APEDA data on 16% processing vs 70% in developed nations), FPO infrastructure deficit, contract farming enforcement, GST rate anomalies, FSSAI compliance costs for MSMEs
- Part (c): Policy gaps—PM Kisan SAMPADA Yojana implementation bottlenecks, Mega Food Park underutilization, export rejection due to MRL issues in EU/US markets
Evaluation rubric
| Dimension | Weight | Max marks | Excellent | Average | Poor |
|---|---|---|---|---|---|
| Concept correctness | 25% | 12.5 | Demonstrates precise understanding across all parts: for (a) correctly identifies C3/C4 flower metabolic differences in post-harvest; for (b) accurately explains Rubisco bifunctionality, glycolate pathway stoichiometry, and quantitative carbon loss; for (c) cites correct processing sector statistics and policy names | Covers basic concepts with minor errors—lists common flowers but confuses keeping quality factors, describes photorespiration superficially without stoichiometric clarity, mentions generic processing challenges without specific data | Significant conceptual errors—confuses photorespiration with dark respiration, lists ornamental plants not in cut flower trade, conflates food processing with food distribution, misrepresents biochemical pathways |
| Quantitative reasoning | 15% | 7.5 | Integrates relevant data: for (a) cites India's floriculture export value (~₹500 crore), optimal storage temperatures (0-4°C for roses, 7-10°C for tropical orchids); for (b) quantifies photorespiratory carbon loss (25-30% in C3 plants), CO2 compensation points; for (c) uses processing sector share (16% vs global 34%), capacity utilization rates of Mega Food Parks | Includes some numerical data but lacks precision—vague references to 'high losses' or 'low processing' without percentages, mentions temperature ranges without specificity | Absent or incorrect quantitative treatment—no data points, fabricated statistics, or irrelevant numerical information |
| Indian context examples | 20% | 10 | Rich India-specific illustration: for (a) names APEDA-designated floriculture zones (Bangalore, Pune, Hyderabad, Thiruvananthapuram), cites rose varieties (Taj Mahal, First Red), mentions Nilgiri orchid exports; for (c) references Operation Greens, SAMPADA scheme, specific state initiatives (UP Food Processing Policy 2020), challenges in mango pulp (Chittoor) and spice processing (Guntur) clusters | Limited Indian context—mentions generic 'India is major producer' without zone specificity, cites only national-level schemes without regional or commodity-specific examples | Wholly generic or foreign-centric treatment—discusses Dutch floriculture or California processing industry without Indian adaptation, no scheme or policy references |
| Diagram / process | 20% | 10 | Includes well-labeled diagram for (b) showing photorespiratory pathway with organelle compartmentalization (chloroplast-peroxisome-mitochondria shuttle), Rubisco active site with CO2/O2 binding; for (a) flowchart of post-harvest handling chain; clear process description of glycolate cycle stoichiometry and energy accounting | Describes processes verbally without visual aid, or includes poorly labeled sketch; mentions pathway steps without clear organelle assignment or stoichiometric balance | No diagram despite clear requirement in (b), confused process description, or irrelevant illustration |
| Policy / extension angle | 20% | 10 | Strong policy integration: for (a) recommends cold chain infrastructure under MIDH, precision farming for quality; for (c) critically examines SAMPADA, PLI scheme for food processing, suggests FPO strengthening, cluster-based approach, harmonization with Codex standards; connects all parts to Doubling Farmers' Income and export competitiveness | Lists relevant schemes without critical evaluation, generic recommendations without implementation pathway, misses interconnection between sub-parts | Absent policy dimension, or irrelevant/outdated scheme references, no extension recommendations |
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