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Some vascular bundles are described as "open" because these:

  1. A
    Possess conjunctive tissue between xylem and phloem.
  2. B
    Are not surrounded by pericycle.
  3. C
    Are surrounded by pericycle but no endodermis.
  4. D
    Are capable of producing secondary xylem and phloem.

Solution & Step-by-step Explanation

Vascular bundles are called "open" when they contain intrafascicular cambium between the xylem and phloem. This cambium allows for secondary growth, producing secondary xylem and phloem.

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Some vascular bundles are described as "open" because these:
A
Possess conjunctive tissue between xylem and phloem.
B
Are not surrounded by pericycle.
C
Are surrounded by pericycle but no endodermis.
D
Are capable of producing secondary xylem and phloem.

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Anatomy of Flowering PlantsVascular Bundles

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