Some vascular bundles are described as open because these
1. are surrounded by pericycle but no endodermis
2. are capable of producing secondary xylem and phloem
3. possess conjunctive tissue between xylem and phloem
4. are not surrounded by pericycle
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Water containing cavities in vascular bundles are found in
1. Sunflower | 2. Maize |
3. Cycas | 4. Pinus |