(botany) The principal conductive cells of the xylem that conducts water and minerals from roots to the other parts of the plants.
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... xylem and there is a different kind of deposition pattern in secondary xylem? Or are they also found in secondary xylem? Do tracheids or vessel elements favour one of these types of thickenings? 2. When the secondary wall is laid down in areas other than where plasmodesmata are does it leave ...
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