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Protophloem is the first formed phloem. ...

Protophloem is the first formed phloem. If the protophloem surrounds by xylem, what kind of arrangement of phloem would you call it. Give example .

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If the protophloem is surrounded by xylem the vascular bundle is said to be Concentric Amphivasal Vascular bundles. Eg : Dracaena
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