Explanation
- A
Thornthwaite
(a) Thornthwaite. C. W. Thornthwaite classified climates by precipitation effectiveness and thermal efficiency, not by the slogan that vegetation is the true index.
- B
Koppen
(b) Koppen. Wladimir Köppen built his climate types from plant-cover boundaries, stating that vegetation is the true index of climate. That stored name is the official key. Letters A–E follow tropical to polar plant realms.
- C
Trewartha
(c) Trewartha. G. T. Trewartha modified Köppen to reduce the mid-latitude sprawl; he did not coin this index slogan as the source.
- D
Stamp
(d) Stamp. L. Dudley Stamp is remembered for land-use survey in Britain and Indian regional geography, not this vegetation-index dictum.
Summary. Official key is (b) Koppen. The line ‘vegetation is the true index of climate’ is tied to Köppen’s scheme. Thornthwaite, Trewartha and Stamp are other climate or land-use names. Neighbouring codes are Af rainforest and BWh hot desert. Honour Köppen for this paper.
Same topic · past papers
UPPSC has asked this before
These previous-year questions sit on the same topic. Open one to practise the earlier ask.
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2025 · Q21 · UPPGS
Given below are two statements, one is labelled as Assertion (A) : and the other as Reason (R). Assertion (A): In the Himalayan mountains different types of vegetation are found. Reason (R): In Himalayas, there are variations in climate with change in altitude. -
2019 · Q1 · UPPGS
Match List-I with List-II and select the correct answer using the codes given below the lists: List-I List - II (Vegetation Type) (Region) A. Maquis 1. California B. Fynbos 2. Mediterranean Sea Coastal Region C. Chaparral 3. South Africa D. Matorral 4. Chile -
2019 · Q3 · UPPGS
Match List-I with List-II and select the correct answer using the codes given below the lists. List-I (Natural Vegetation) A. Epiphytes B. Acacia C. Baobab D. Cedars List-II (Region) 1. Mediterranean 2. Equatorial 3. Sahara 4. Savanna Code: