Question

Briefly describe the anatomy of primary dicot root.

Answer 1

1. The epiblema is the outermost layer of root made of thin-walled, slightly elongated parenchymatous cells. Root hair present on its surface helps in water and mineral absorption.
2. Cortex is narrow.
3. Endodermis is less thickened and Casparian strips are more prominent that maintains the transportation of water.
4. Pericycle gives rise to secondary xylem and lateral meristem.
   
5. Vascular bundles are 2 to 6 in numbers that are diarch to hexarch with exarch condition.
6. Cambium develops at the time of secondary growth.
7. Pith is absent or poorly developed.