UPSC CSE Prelims
Ecological Succession Previous Year Questions (PYQs)
Practice solved questions for Ecological Succession with detailed step-by-step solutions, key insights, and trend analysis for UPSC CSE PRELIMS.
Solved Previous Year Questions
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In the grasslands, trees do not replace the grasses as a part of an ecological succession because of
Detailed Explanation:
Grasslands maintain themselves as climax communities due to two primary limiting factors: water scarcity and periodic fires.
Grasses have meristematic tissue at the base (not tips), allowing rapid regrowth after fire, while tree seedlings die in fires. Additionally, low annual precipitation (25-75 cm) and thin, dry soil prevent tree establishment, maintaining grasslands in a sub-climax stage.
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