Two cross-sections of stem and root appear simple, when viewed by naked eye. But under microscope, they can be differentiated by
(a) exarch condition of root and stem
(b) endarch condition of stem and root
(c) endarch condition of root and exarch condition of stem
(d) endarch condition of stem and exarch condition of root
(d) endarch condition of stem and exarch condition of root
Explanation:
The cross sections of stem and root appear simple, when viewed by naked eye but under microscope they can be differentiated as endarch condition in stem and exarch condition in root. In endarch, protoxylem is present towards the center of stem while metaxylem towards the pericycle. In the exarch condition, protoxylem is present towards pericycle and metaxylem towards the center of the root.