Q11 / 120 · NEET 2011 (Mains) · Botany

Some vascular bundles are described as open because these

A
are surrounded by pericycle but to endodermis
Correct answer
B
are capable of producing secondary xylem and phloem
C
possess conjunctive tissue between xylem and phloem
D
are not surrounded by pericycle

Solution

In open vascular bundle, cambium is present between xylem and phloem of the same vascular bundle, $e g$, dicot stems. Due to the presence of cambium, secondary growth in stem occurs and secondary permanent tissues (secondary xylem, secondary phloem and vascular rays) are formed.

Hence, the correct answer is option: 'B'.

More Anatomy of Flowering Plants Questions

The rupture and fractionation do not usually occur in the water column in vessel/tracheids during the ascent of sap because of2008 (Screening)Introduction
Ectophloic siphonostele is found in:2005Introduction
The main function of bulliform cells in grasses is :2026 (Cancelled)Anatomy of Leaf
Match List I with List II : List I List II A. Conjunctive tissue I. Specialised cells in the vicinity of guard cells B. Casparian strips II.2026 (Cancelled)Anatomy of Plant Parts
Find the statement that is NOT correct with regard to the structure of monocot stem.2025Anatomy of Plant Parts
Formation of interfascicular cambium from fully developed parenchyma cells is an example for2024Secondary Growth