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Contains an interfascicular cambium in between phloem and xylem.
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Interfascicular cambium is absent.
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Phloem and xylem are not in direct contact with each other.
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There is direct contact between phloem and xylem.
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Secondary phloem and xylem are formed in between the primary phloem and xylem.
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Such activity is absent.
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These are present in dicot and gymnosperm stems.
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Present in leaves and monocot stems.
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These are either collateral or bicollateral.
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These can be collateral or concentric.
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