Internal Structure of Dicot Root MCQ - Practice Questions with Answers

SUMMARY - Internal Structure of Dicot Root Showing Primary Growth

• The outermost layer is epiblema. 
• Many of the cells of epiblema protrude in the form of unicellular root hairs.
• The cortex consists of several layers of thin-walled parenchyma cells with intercellular spaces. 
• The innermost layer of the cortex is called endodermis.
• The endodermis comprises a single layer of barrel-shaped cells without any intercellular spaces.
• The tangential, as well as radial walls of the endodermal cells, have a deposition of
• water-impermeable, waxy material suberin in the form of casparian strips. 
• Next to endodermis lies a few layers of thick-walled parenchymatous cells referred to as pericycle.
• The pith is small or inconspicuous. 
• The parenchymatous cells which lie between the xylem and phloem are called conjunctive tissue
• There are usually two to four xylem and phloem patches.