In the grasslands, trees do not replace the grasses as a part of an ecological succession because of
[amp_mcq option1=”insects and fungi” option2=”limited sunlight and paucity of nutrients” option3=”water limits and fire” option4=”None of the above” correct=”option3″]
This question was previously asked in
UPSC IAS – 2013
In many grassland ecosystems, the primary environmental factors that prevent the establishment and growth of trees, thus maintaining the dominance of grasses in ecological succession, are limited water availability (seasonal droughts, low rainfall) and frequent fires (natural or human-caused). Grasses are well-adapted to these conditions, with deep root systems that survive drought and ability to quickly regrow after fire, whereas young trees are often killed by lack of water or fire.