Radial vascular bundles characteristically occur in
Important Questions on Morphology and Modifications
Read the following statements about the vascular bundles:
(a) In roots, xylem and phloem in a vascular bundle are arranged in an alternate manner along the different radii.
(b) Conjoint closed vascular bundles do not possess cambium.
(c) In open vascular bundles, cambium is present in between xylem and phloem.
(d) The vascular bundles of dicotyledonous stem possess endarch protoxylem.
(e) In monocotyledonous root, usually there are more than six xylem bundles present.
Choose the correct answer from the options given below :
Two cross-sections of stem and root appear simple when viewed by the naked eye. But under a microscope, they can be differentiated by:
A transverse section of a typical monocot root shows
(a) Barrel-shaped endodermal cells with casparian strips.
(b) Diarch to hexarch vascular bundles.
(c) Protoxylem towards center
and metaxylem towards periphery.
(d) Large well-developed parenchymatous pith in center.
Mark A, B, C, and D in the given figure.
