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Phloem Transport: Flow from Source to Sink

In a ring girdled plant


In ring girdled plant, the bark of the plant is removed from around the entire circumference of either a branch or trunk of a woody plant. The bark is any tissue present above the vascular cambium ring. Therefore, the bark includes the phloem. Phloem is used for the transport of food from mostly leaves to the other plant parts. Hence, if we remove the bark the food conduction can not take place from the leaves to the roots. Due to deprivation of food the roots die first.

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