GyanGram
ATTEMPT · ENVIRONMENT · PRELIMS 2013
In the grasslands, trees do not replace the grasses as a part of an ecological succession because of
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In the grasslands, trees do not replace the grasses as a part of an ecological succession because of
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• Correct Answer: C
• Grasslands have limited rainfall (semi-arid, 250–750 mm) insufficient for tree establishment; periodic fires kill tree seedlings while grasses survive via deep root systems, preventing succession to forest.
• A is wrong: Insects and fungi are not primary limiting factors. B is wrong: Sunlight and nutrients are generally adequate.
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