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Question
If in any plant, pith is absent, xylem surrounds the phloem or phloem surrounds the xylem. It is called as
If in any plant, pith is absent, xylem surrounds the phloem or phloem surrounds the xylem. It is called as
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Solution
The correct option is B Concentric
In concentric vascular bundles, one vascular element surrounds the other on all sides. It is of two types: leptocentric and hydrocentric. In radial bundles, xylem and phloem are seen as patches and they alternate each other and occupy the different radii on the axis separated by non-conductive tissue. In conjoint bundles, xylem and phloem are on same radii. In collateral bundles, xylem and phloem are arranged side by side on same radius. Thus, the correct answer is option D.
In concentric vascular bundles, one vascular element surrounds the other on all sides. It is of two types: leptocentric and hydrocentric. In radial bundles, xylem and phloem are seen as patches and they alternate each other and occupy the different radii on the axis separated by non-conductive tissue. In conjoint bundles, xylem and phloem are on same radii. In collateral bundles, xylem and phloem are arranged side by side on same radius.
Thus, the correct answer is option D.
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