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UPSC 2021: 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.
(a)1 and 2
(b)4 and 5
(c)2, 3 and 4
(d)1, 3 and 5
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Not attemptedCorrect Answer: (c) 2, 3 and 4
Open savannas remain grass-dominated because (i) frequent natural fires scorch tree saplings, (ii) large grazing herbivores browse young shoots, and (iii) the strongly seasonal rainfall regime imposes a long dry season that stresses woody vegetation. Burrowing animals/termites and soil properties can influence local patches but are not the primary, ubiquitous checks on forest growth, so the correct combination is 2 + 3 + 4 → option (c). ([edurev.in](https://edurev.in/t/330261/UPSC-Prelims-Previous-Year-Questions-2021-Geography?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 2021 Environment & Ecology question?▼
The correct answer is option (c): 2, 3 and 4. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Ecosystems & Ecology Concepts question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2021, GS Paper 1, as Question 61. It falls under Environment & Ecology > Ecosystems & Ecology Concepts.
What is the difficulty level of this UPSC question?▼
This question is rated "moderate". It requires sound conceptual understanding of the topic.
How many UPSC Prelims questions have been asked from Ecosystems & Ecology Concepts?▼
UPSC has asked 48 questions from Ecosystems & Ecology Concepts (under Environment & Ecology) across multiple years. Visit the topic page to see the full list and year-wise trends.