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Unformatted text preview: Cucurbita stem vascular tissue is an example of this.) Primary Xylem is found toward the interior of the vascular bundle. When there is secondary growth, there will be a layer of procambium retained between the primary xylem and primary phloem. Such vascular bundles are said to be open vascular bundles, because they can proceed to secondary growth. Eudicots that lack secondary growth have closed vascular bundles, and no procambium remains between the primary xylem and primary phloem. Eudicot open vascular bundle Closed vascular bundle...
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This note was uploaded on 01/08/2012 for the course BIO 213 taught by Professor Makina during the Fall '09 term at SUNY Stony Brook.
- Fall '09