Q. 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
Explanation
[Solution from source] A vascular bundle is open when cambium is present between xylem and phloem, so it can produce secondary xylem and phloem. Conjunctive tissue lies between separate xylem and phloem patches in roots and does not make a bundle open. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.