The vegetation of savannah consists of grassland with scattered small trees, but extensive areas have no trees. The forest development in such areas is generally kept in check by one or more or a combination of some conditions. Which of the following are such conditions? 1. Burrowing animals and termites 2. Fire 3. Grazing herbivores 4. Seasonal rainfall 5. Soil properties Select the correct answer using the code given below.
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A hard Environment multiple-choice question from UPSC Prelims 2021. Attempt it above, then check the correct answer and detailed explanation below.
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Correct answer: D. 1, 3 and 5
Per the official key, forest development in the savannah is kept in check by burrowing animals and termites, grazing herbivores and soil properties (1, 3 and 5). (This question was widely debated, since fire and seasonal rainfall are also classic limiting factors; the answer follows the official key.)
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