Q. Vascular bundles in monocotyledons are considered closed because
A) Xylem is surrounded all around by phloem
B) There are no vessels with perforations
C) A bundle sheath surrounds each bundle
D) There is no secondary growth
Explanation
The vascular bundles containing cambium are said to be open but if no cambium develops, they are referred as closed. Due to absence of cambium, the secondary growth is not found. In most monocotyledons, closed vascular bundles are found.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.