GyanGram
ATTEMPT · ENVIRONMENT · PRELIMS 2011
When the bark of a tree is removed in a circular fashion all around near its base, it gradually dries up and…
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When the bark of a tree is removed in a circular fashion all around near its base, it gradually dries up and dies because?
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• Correct Answer: B
• Bark contains phloem which transports photosynthates from leaves to roots. Girdling severs phloem, starving roots of energy.
• Xylem usually remains intact, so water transport continues; root starvation causes eventual tree death.
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