| (i) The cortex consists of several layers of thin-walled parenchyma cells with intercellular spaces. |
| (ii) The tangential as well as radial walls of the endodermal cells have a deposition of water-impermeable, waxy materialsuberin, in form of casparian strips. |
| (iii) Secondary growth takes place. |
| (iv) Pith is small or inconspicuous. |
A) Dicotyledonous root
B) Monocotyledonous root
C) Dicotyledonous stem
D) Monocotyledonous stem
Correct Answer: A
Solution :
[a] All the statements describe the anatomy of dicotyledonous root. Dicot root consists of a single layer of epiblema which bears unicellular root hairs. Endodermis is followed by one or more layers of pericycle. Inner to pericycle, lies radially arranged vascular bundles. This arrangement keeps the xylem bundles in direct contact with the outer tissue of the roots which conduct water absorbed by root hairs to the inside. Xylem is exarch.
You need to login to perform this action.
You will be redirected in
3 sec
