Q. Consider the following statements. I. In a dicot root, the vascular bundles are collateral and endarch. II. The innermost layer of cortex in a dicot root is endodermis. III . In a dicot root, the phloem masses are separated from the xylem by parenchymatous cells that are known as the conjunctive tissue.
A) I is true, but II and III are false
B) II is true, but I and III are false
C) I is false, but II and III are true
D) III is false, but I and III are true
Explanation
In a dicot root, the vascular bundles are collateral and exarch. The innermost layer of cortex in roots is endodermis. It is made up of closely packed living cells characterized by presence of Casparian strips. In vascular bundle of dicot roots, xylem and phloem patches are separated from each other by intervening thin-walled parenchyma cells called conjunctive or complementary tissue.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.