Discuss the consequences of climate change on the food security in tropical countries.
Approach · directive: “discuss”
What it asks · Discuss how warming, erratic rainfall and extreme events affect the four pillars of food security (availability, access, utilisation, stability) in the tropics.
The question has 2 parts — answer each
- Discuss the consequences for food availability in tropical countries: yields, water, pests, livestock and fisheries
- Discuss the consequences for access, utilisation and stability: prices, incomes, nutrition and repeated shocks, with a brief note on reducing the risk
Open with · Tropical countries are largely developing, agrarian and rain-fed, and already farm near crops' heat limits, so they face the sharpest food-security risks from climate change.
Cover
- Availability: heat stress lowers yields of rice, wheat and maize; a shifting monsoon, droughts and floods destroy standing crops.
- Water, soil and pests: warmer conditions spread pests and diseases; falling soil moisture, coastal salinity and altered glacier-fed rivers weaken irrigation security.
- Livestock and fisheries: heat stress cuts milk and meat output; warming, acidifying seas and coral loss reduce fish catch, a vital protein source for coastal poor.
- Access and stability: production shocks raise prices, cut farm incomes and worsen hunger; export bans and volatile world markets magnify the shock.
- Utilisation: floods and heat strain safe water and sanitation, increasing disease and undernutrition, especially among children.
- Response: stress-tolerant varieties, micro-irrigation, crop insurance, early-warning advisories, diversified diets and stronger grain stocks.
Close with · Adapting farming systems and protecting the most vulnerable now is cheaper than absorbing repeated food crises later.
Question: UPSC's CS (Main) 2023, GS Paper I — paper ↗. Approach: Minimalist IAS, checked 30 Sept 2026 (how we verify) — UPSC publishes no model answers. ·
Model answer · 223 words (UPSC limit 150) · Minimalist IAS
Tropical countries are mostly agrarian, rain-fed and poor, and their crops already grow near their heat limits, so climate change strikes their food security first and hardest, across all four pillars.
Availability: less food produced
- Heat stress and shorter growing seasons cut yields of rice, maize and wheat; erratic monsoons, droughts and floods destroy standing crops.
- Warmer, wetter conditions spread pests and crop diseases, while falling soil moisture, coastal salinity and shrinking glacier-fed flows weaken irrigation.
- Livestock give less milk and meat under heat stress; warming, acidifying seas and coral loss reduce fish catch, the main protein of the coastal poor.
Access: dearer food, poorer buyers
- Production shocks raise prices and cut farm and labour incomes at once, so the rural poor eat less; export bans and volatile world markets carry the shock across borders.
Utilisation: poorer nutrition
- Floods and heat contaminate water and sanitation, spreading diarrhoea and undernutrition among children; higher carbon dioxide also lowers the protein, zinc and iron in staple grains.
Stability: repeated shocks
- Back-to-back extreme events erode household and national buffers, drive distress migration and turn seasonal hunger into chronic insecurity.
Reducing the risk
- Heat- and flood-tolerant varieties, micro-irrigation, crop insurance, early-warning advisories, diversified diets and adequate grain reserves.
Investing now in climate-resilient farming and social protection in the tropics costs far less than absorbing repeated food crises later.
Written by Minimalist IAS from facts checked at source (how we verify) — a little fuller than exam length, so every part of the question is covered; in the hall, keep the structure and trim the detail. UPSC publishes no model answers: compare your structure and coverage with this, then write your own.