Question

Open vascular bundles are those which

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

Answer 1

The correct option is B Are capable of producing secondary xylem and phloem

In dicotyledonous stems, cambium is present between phloem and xylem. Such vascular bundles because of the presence of cambium possess the ability to form secondary xylem and phloem tissues, and hence are called open vascular bundles. In the monocotyledons, the vascular bundles have no cambium present in them.

So, the correct answer is 'Are capable of producing secondary xylem and phloem.'