CAPF AC 2015 PYQ with Answer — The trees of tropical rainforest have buttress roots because:

2015 · Q93

The trees of tropical rainforest have buttress roots because:

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Athey help to provide aeration to soils
Bthe organisms found in the buttresses have a symbiotic relationship
Cthe trees belong to gramineae family
Dthe buttresses have to bear the mechanical load of hardwoods

Explanation

Tropical rainforest trees grow in shallow soils, so they develop wide buttress roots that act as structural supports bearing the mechanical load of the tall hardwoods. The buttresses are not for aeration, symbiosis or related to the grass family. Hence they bear the mechanical load of hardwoods.