UPSC Prelims 2013 · Question 72 of 99

UPSC Prelims 2013 question on Grassland Succession Fire

In the grasslands, trees do not replace the grasses as a part of an ecological succession because of:

  1. Insects and fungi
  2. Limited sunlight and paucity of nutrients
  3. Water limits and fire
  4. None of the above
Show answer

Answer: C. Water limits and fire

Analysis

In grassland ecosystems, periodic fires and limited water availability prevent the establishment and growth of large trees. Grasses are better adapted to survive such conditions through deep roots and rapid regeneration after fire. Therefore, trees generally do not replace grasses during ecological succession in these regions.

Extra UPSC info

Grasslands are often maintained by a combination of grazing, seasonal drought, and natural fires.

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