When phloem is completely surrounded by xylem, the vascular bundle is called

Concentric leptocentric/amphivasal

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Concentric hadrocentric/amphicribal

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Conjoint collateral

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Conjoint bicollateral

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Solution

The correct option is A Concentric leptocentric/amphivasal
In Concentric bundle xylem either encircles or is encircled by phloem and accordingly the following two types are recognized: 1) Concentric leptocentric/amphivasal 2) Concentric hadrocentric/amphicribal
Amphivasal bundle is a vascular bundle in which xylem encircles the central strand of phloem is known as amphivasal bundle, also called leptocentric bundle. Ex. Dracaena, Yucca.
So, the correct answer is 'Concentric leptocentric/amphivasal.'

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Similar questions

(A) Radial vascular bundle -	Xylem and phloem on different radii
(B) Bicollateral vascular bundle -	Phloem present on both sides of xylem
(C) Amphivasal vascular bundle -	Phloem surrounds xylem
(D) Conjoint vascular bundle -	Xylem and phloem on same radii

In which particular location phloem occur in bicollateral vascular bundles?

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